FNUS55 KBOU 181023 FWFBOU Fire Weather Forecast for Northeast and North Central Colorado National Weather Service Denver/Boulder CO 423 AM MDT Mon May 18 2026 .DISCUSSION...Today and tonight... Widespread wetting rain is expected across the plains this morning into this afternoon. The highest totals will be in the northern I-25 corridor. For the mountains, snow accumulations of 4 to 18 inches are expected, with the highest amounts on eastward facing slopes. LONG TERM DISCUSSION...Tuesday through Friday... Minimum RHs are expected to remain well above critical thresholds for much of the area through Friday. Precipitation chances will return each afternoon for Tuesday through Thursday. Fire weather conditions will remain limited this work week. ...Thunderstorms imply strong gusty erratic winds... ...All surface winds are 20-Foot...10-Minute averaged winds... ...CWR is Chance of Wetting Rain - 0.10 inch or more liquid... ...24 HR Trends are based on averages over the respective zone groups and may not match the actual forecast values shown in those groups... COZ238-190015- Larimer County Below 6000 Feet/Northwest Weld County- Including Fort Collins, Hereford, Loveland, Nunn, and West Pawnee Grasslands 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers until 1500. Slight chance of thunderstorms and snow showers after 1200. Rain showers likely after 1500. Chance of thunder...20 percent. Max Temperature.....38-44. 24 hr trend......20-25 degrees cooler. Min Humidity........72-82%. 24 hr trend......35-50% wetter. 20-foot winds.......Northeast winds 13-22 mph with gusts to around 35 mph. CWR.................90 percent decreasing to 60 percent in the afternoon. 15K FT MSL winds....Southwest 35-45 mph. Mixing height.......2500-3500 ft AGL. Transport winds.....Northeast 15-20 mph until 1500, then north. Smoke dispersal.....Fair. .TONIGHT... Sky/weather.........Mostly cloudy(60-65%). Slight chance of rain showers until 2400. Slight chance of snow showers until 0300. Chance of thunder...0 percent. Min Temperature.....24-32. 24 hr trend......4-7 degrees cooler. Max Humidity........86-96%. 24 hr trend......7-10% drier. 20-foot winds.......North winds 7-15 mph. Gusts up to 30 mph decreasing to 20 mph after midnight. CWR.................10 percent decreasing to 0 percent after midnight. 15K FT MSL winds....West 30-40 mph. Mixing height.......2000-3000 ft AGL. Transport winds.....North 15-20 mph until 2400. Light after 0400. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Mostly cloudy(50-60%) until 0900, then partly cloudy(40-50%) until 1200, then mostly cloudy. Chance of rain showers after 1200. Chance of thunder...0 percent. Max Temperature.....47-53. 24 hr trend......7-10 degrees warmer. Min Humidity........41-51%. 24 hr trend......25-35% drier. 20-foot winds.......Northeast winds 4-6 mph until 1200, then southeast 4-7 mph. CWR.................0 percent. 15K FT MSL winds....West 25-35 mph. Mixing height.......5500-6500 ft AGL. Transport winds.....Light winds until 1300, then south around 10 mph until 1400, then east until 1500, then south until 1600, then southeast. Smoke dispersal.....Poor. .TUESDAY NIGHT...Mostly cloudy. Chance of rain showers. Lows in the mid 30s. South winds 4-8 mph. .WEDNESDAY...Mostly cloudy. Chance of thunderstorms. Highs around 60. Southeast winds 4-9 mph. .THURSDAY...Mostly cloudy. Chance of thunderstorms. Lows in the upper 30s. Highs in the upper 60s. West winds 4-9 mph. .FRIDAY...Mostly cloudy. Slight chance of thunderstorms. Lows in the upper 30s. Highs in the upper 60s. North winds 4-9 mph. $$ COZ239-190015- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- Including Arvada, Boulder, Golden, Lakewood, and Longmont 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers until 1500. Slight chance of thunderstorms after 0900. Rain showers likely after 1500. Chance of thunder...20 percent. Max Temperature.....41-45. 24 hr trend......20-25 degrees cooler. Min Humidity........73-81%. 24 hr trend......35-50% wetter. 20-foot winds.......North winds 9-17 mph with gusts to around 30 mph. CWR.................80 percent. 15K FT MSL winds....Southwest 35-45 mph. Mixing height.......2000-3000 ft AGL. Transport winds.....Northeast 10-15 mph until 1200, then north 15-20 mph. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly cloudy. Chance of rain showers until 2400. Slight chance of snow showers. Slight chance of rain showers after 2400. Chance of thunder...0 percent. Min Temperature.....30-34. 24 hr trend......7-10 degrees cooler. Max Humidity........90-100%. 24 hr trend......2-4% drier. 20-foot winds.......North winds 5-13 mph. Gusts up to 25 mph in the evening. CWR.................10 percent. 15K FT MSL winds....Southwest 30-40 mph. Mixing height.......2000-3000 ft AGL. Transport winds.....North 10-15 mph until 0100, then light. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Mostly cloudy. Slight chance of snow showers after 1200 until 1500. Rain showers likely and slight chance of thunderstorms after 1200. Chance of thunder...20 percent. Max Temperature.....45-49. 24 hr trend......4-7 degrees warmer. Min Humidity........59-69%. 24 hr trend......15-20% drier. 20-foot winds.......East winds 4-8 mph. CWR.................0 percent increasing to 10 percent in the afternoon. 15K FT MSL winds....Southwest 25-35 mph. Mixing height.......3500-4500 ft AGL. Transport winds.....Light winds until 1300, then east around 10 mph until 1700, then northeast. Smoke dispersal.....Poor. .TUESDAY NIGHT...Rain showers likely. Lows in the upper 30s. West winds 4-8 mph. .WEDNESDAY...Not as cool. Mostly cloudy. Chance of thunderstorms. Highs in the upper 50s. East winds 4-6 mph. .THURSDAY...Partly cloudy. Chance of thunderstorms. Lows in the upper 30s. Highs in the upper 60s. Northeast winds 4-6 mph. .FRIDAY...Mostly cloudy. Chance of thunderstorms. Lows in the lower 40s. Highs in the upper 60s. East winds 4-6 mph. $$ COZ240-190015- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, and Parker 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers likely until 0900, then rain showers and slight chance of thunderstorms. Slight chance of snow showers after 1500. Chance of thunder...20 percent. Max Temperature.....43-47. 24 hr trend......20-25 degrees cooler. Min Humidity........72-82%. 24 hr trend......35-50% wetter. 20-foot winds.......East winds 9-16 mph until 1200, then north 12-18 mph. Gusts up to 30 mph. CWR.................70 percent increasing to 80 percent in the afternoon. 15K FT MSL winds....Southwest 35-45 mph. Mixing height.......2000-3000 ft AGL. Transport winds.....East 15-20 mph until 1300, then north. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly cloudy. Chance of rain and snow showers until 2400, then slight chance of rain and snow showers. Chance of thunder...0 percent. Min Temperature.....29-35. 24 hr trend......7-10 degrees cooler. Max Humidity........87-97%. 24 hr trend......Little change. 20-foot winds.......North winds 6-14 mph. Gusts up to 25 mph in the evening. CWR.................10 percent decreasing to 0 percent after midnight. 15K FT MSL winds....Southwest 30-40 mph. Mixing height.......2000-3000 ft AGL. Transport winds.....North 10-15 mph until 0300, then light. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Mostly cloudy. Chance of rain showers after 1200. Chance of thunder...0 percent. Max Temperature.....49-53. 24 hr trend......4-7 degrees warmer. Min Humidity........50-58%. 24 hr trend......20-25% drier. 20-foot winds.......Northeast winds 4-9 mph. CWR.................0 percent increasing to 10 percent in the afternoon. 15K FT MSL winds....Southwest 30-40 mph. Mixing height.......5000-6000 ft AGL. Transport winds.....Light winds until 1300, then east around 10 mph until 1600, then northeast. Smoke dispersal.....Poor. .TUESDAY NIGHT...Rain showers likely. Lows in the upper 30s. Northwest winds 4-7 mph. .WEDNESDAY...Mostly cloudy. Chance of thunderstorms. Highs in the lower 60s. Southeast winds 4-9 mph. .THURSDAY...Partly cloudy. Chance of thunderstorms. Lows around 40. Highs in the upper 60s. North winds 4-8 mph. .FRIDAY...Partly cloudy. Slight chance of thunderstorms. Lows in the lower 40s. Highs in the upper 60s. Northeast winds 4-8 mph. $$ COZ241-190015- Elbert/Central and East Douglas Counties Above 6000 Feet- Including Castle Rock, Elbert, Fondis, Kiowa, and Larkspur 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Mostly cloudy. Rain showers and slight chance of thunderstorms. Snow showers after 1200. Chance of thunder...20 percent. Max Temperature.....43-52. 24 hr trend......15-20 degrees cooler. Min Humidity........76-86%. 24 hr trend......35-50% wetter. 20-foot winds.......Southeast winds 8-15 mph until 1200, then north 12-18 mph. Gusts up to 30 mph. CWR.................40 percent increasing to 70 percent in the afternoon. 15K FT MSL winds....Southwest 45-55 mph. Mixing height.......2500-3500 ft AGL. Transport winds.....Southeast 15-20 mph until 1300, then southwest until 1400, then north. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly cloudy. Chance of rain and snow showers until 2400, then slight chance of snow showers. Chance of thunder...0 percent. Min Temperature.....26-30. 24 hr trend......10-15 degrees cooler. Max Humidity........100%. 24 hr trend......Little change. 20-foot winds.......North winds 8-16 mph with gusts to around 30 mph. CWR.................10 percent decreasing to 0 percent after midnight. 15K FT MSL winds....Southwest 35-45 mph. Mixing height.......2000-2500 ft AGL. Transport winds.....North 15-20 mph until 0300, then around 10 mph. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Mostly cloudy(60-65%). Slight chance of snow showers after 1200 until 1500. Chance of rain showers after 1200. Chance of thunder...0 percent. Max Temperature.....48-54. 24 hr trend......4-7 degrees warmer. Min Humidity........52-62%. 24 hr trend......25-35% drier. 20-foot winds.......East winds 4-12 mph. Gusts up to 20 mph in the afternoon. CWR.................0 percent. 15K FT MSL winds....Southwest 40-50 mph. Mixing height.......5000-6000 ft AGL. Transport winds.....Light winds until 1200, then southeast 10-15 mph. Smoke dispersal.....Poor until 1400, then fair. .TUESDAY NIGHT...Rain showers likely. Lows in the mid 30s. East winds 5-12 mph. .WEDNESDAY...Rain showers and chance of thunderstorms. Highs in the upper 50s. South winds 9-16 mph. .THURSDAY...Mostly cloudy. Chance of thunderstorms. Lows in the upper 30s. Highs in the mid 60s. South winds 4-9 mph. .FRIDAY...Mostly cloudy. Chance of thunderstorms. Lows in the upper 30s. Highs in the mid 60s. North winds 5-12 mph. $$ COZ242-190015- Northeast Weld County- Including Briggsdale, East Pawnee Grasslands, Grover, Pawnee Buttes, Raymer, and Stoneham 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers likely until 0900, then rain showers. Slight chance of snow showers after 1500. Chance of thunder...0 percent. Max Temperature.....40-44. 24 hr trend......20-25 degrees cooler. Min Humidity........72-82%. 24 hr trend......35-50% wetter. 20-foot winds.......Northeast winds 13-23 mph with gusts to around 35 mph. CWR.................50 percent increasing to 60 percent in the afternoon. 15K FT MSL winds....Southwest 40-50 mph. Mixing height.......2500-3000 ft AGL. Transport winds.....Northeast 20-25 mph until 1600, then north. Smoke dispersal.....Fair. .TONIGHT... Sky/weather.........Mostly cloudy until 2400, then partly cloudy(40-50%). Chance of thunder...0 percent. Min Temperature.....27-31. 24 hr trend......4-7 degrees cooler. Max Humidity........88-94%. 24 hr trend......7-10% drier. 20-foot winds.......North winds 9-17 mph. Gusts up to 30 mph decreasing to 20 mph after midnight. CWR.................0 percent. 15K FT MSL winds....West 30-40 mph. Mixing height.......1500-2500 ft AGL. Transport winds.....North 15-20 mph until 0300, then around 10 mph. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Partly cloudy(40-50%) until 1500, then mostly cloudy. Chance of thunder...0 percent. Max Temperature.....53-57. 24 hr trend......10-15 degrees warmer. Min Humidity........30-34%. 24 hr trend......35-50% drier. 20-foot winds.......Northwest winds 4-8 mph until 1200, then northeast 4-6 mph. CWR.................0 percent. 15K FT MSL winds....West 30-40 mph. Mixing height.......6500-7500 ft AGL. Transport winds.....Northwest around 10 mph until 1100, then light until 1300, then northwest around 10 mph until 1500, then light until 1600, then north around 10 mph. Smoke dispersal.....Poor until 1600, then fair. .TUESDAY NIGHT...Mostly cloudy. Chance of rain showers. Lows in the upper 30s. South winds 4-8 mph. .WEDNESDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Highs in the lower 60s. South winds 9-16 mph. .THURSDAY...Mostly cloudy. Chance of thunderstorms. Lows in the upper 30s. Highs in the upper 60s. Southeast winds 5-12 mph. .FRIDAY...Partly cloudy. Slight chance of thunderstorms. Lows in the upper 30s. Highs around 70. North winds 6-13 mph. $$ COZ243-190015- Central and South Weld County- Including Eaton, Fort Lupton, Greeley, and Roggen 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers likely until 0900, then rain showers. Slight chance of thunderstorms after 1200. Chance of thunder...20 percent. Max Temperature.....42-46. 24 hr trend......20-25 degrees cooler. Min Humidity........72-82%. 24 hr trend......35-50% wetter. 20-foot winds.......Northeast winds 12-22 mph with gusts to around 35 mph. CWR.................60 percent increasing to 70 percent in the afternoon. 15K FT MSL winds....Southwest 40-50 mph. Mixing height.......2500-3500 ft AGL. Transport winds.....East 15-20 mph until 1100. North after 1500. Smoke dispersal.....Fair. .TONIGHT... Sky/weather.........Mostly cloudy until 0300, then partly cloudy(40-50%). Slight chance of rain showers until 2400. Chance of thunder...0 percent. Min Temperature.....29-33. 24 hr trend......4-7 degrees cooler. Max Humidity........88-98%. 24 hr trend......7-10% drier. 20-foot winds.......North winds 10-17 mph with gusts to around 30 mph until 2400, then 4-7 mph. CWR.................10 percent decreasing to 0 percent after midnight. 15K FT MSL winds....Southwest 25-35 mph. Mixing height.......1500-2500 ft AGL. Transport winds.....North 10-15 mph until 0300, then light. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Partly cloudy(40-50%) until 1200, then mostly cloudy(60-65%). Slight chance of rain showers after 1200. Chance of thunder...0 percent. Max Temperature.....51-55. 24 hr trend......7-10 degrees warmer. Min Humidity........41-51%. 24 hr trend......25-35% drier. 20-foot winds.......Northeast winds 4-8 mph until 1200, then southeast 4-8 mph. CWR.................0 percent. 15K FT MSL winds....Southwest 25-35 mph. Mixing height.......5500-6500 ft AGL. Transport winds.....Light winds until 1300, then east around 10 mph until 1500, then light until 1600, then northeast around 10 mph. Smoke dispersal.....Poor. .TUESDAY NIGHT...Rain showers likely. Lows in the upper 30s. Southwest winds 4-7 mph. .WEDNESDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Highs in the lower 60s. Southeast winds 5-12 mph. .THURSDAY...Partly cloudy. Chance of thunderstorms. Lows in the upper 30s. Highs in the upper 60s. Northeast winds 4-8 mph. .FRIDAY...Partly cloudy. Slight chance of rain showers. Lows in the upper 30s. Highs in the lower 70s. Northeast winds 4-9 mph. $$ COZ244-190015- Morgan County- Including Brush, Fort Morgan, Goodrich, and Wiggins 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers likely until 1200, then rain showers. Chance of thunder...0 percent. Max Temperature.....44-48. 24 hr trend......20-25 degrees cooler. Min Humidity........77-85%. 24 hr trend......35-50% wetter. 20-foot winds.......Northeast winds 14-23 mph with gusts to around 35 mph. CWR.................20 percent increasing to 70 percent in the afternoon. 15K FT MSL winds....Southwest 45-55 mph. Mixing height.......2500-3000 ft AGL. Transport winds.....East 15-20 mph until 1100. North after 1600. Smoke dispersal.....Fair. .TONIGHT... Sky/weather.........Mostly cloudy(60-65%) until 2400, then partly cloudy(35-45%). Chance of thunder...0 percent. Min Temperature.....29-33. 24 hr trend......7-10 degrees cooler. Max Humidity........94-98%. 24 hr trend......2-4% drier. 20-foot winds.......North winds 13-20 mph with gusts to around 30 mph until 2400, then northwest 4-9 mph with gusts to around 20 mph. CWR.................0 percent. 15K FT MSL winds....Southwest 30-40 mph. Mixing height.......1500-2500 ft AGL. Transport winds.....North 15-20 mph until 0200. Light after 0500. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Partly cloudy(30-40%) until 1500, then mostly cloudy(60-65%). Chance of thunder...0 percent. Max Temperature.....54-58. 24 hr trend......7-10 degrees warmer. Min Humidity........33-41%. 24 hr trend......35-50% drier. 20-foot winds.......North winds 4-8 mph until 1200, then northeast 4-7 mph. CWR.................0 percent. 15K FT MSL winds....Southwest 35-45 mph. Mixing height.......6000-7000 ft AGL. Transport winds.....Light winds until 0800, then north around 10 mph until 1000, then light until 1600, then northeast around 10 mph. Smoke dispersal.....Poor. .TUESDAY NIGHT...Mostly cloudy. Chance of rain showers. Lows in the upper 30s. Southeast winds 4-8 mph. .WEDNESDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Highs in the lower 60s. Southeast winds 12-18 mph. .THURSDAY...Mostly cloudy. Chance of thunderstorms. Lows in the upper 30s. Highs around 70. Southeast winds 6-13 mph. .FRIDAY...Partly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows in the upper 30s. Highs in the lower 70s. North winds 6-13 mph. $$ COZ245-190015- Central and East Adams and Arapahoe Counties- Including Bennett, Byers, Deer Trail, and Leader 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers likely until 0900, then rain showers. Slight chance of thunderstorms after 1200 until 1500. Chance of thunder...20 percent. Max Temperature.....44-48. 24 hr trend......20-25 degrees cooler. Min Humidity........81-89%. 24 hr trend......More than 50% wetter. 20-foot winds.......East winds 12-18 mph until 1200, then north 15-21 mph. Gusts up to 30 mph. CWR.................30 percent increasing to 80 percent in the afternoon. 15K FT MSL winds....Southwest 45-55 mph. Mixing height.......2000-2500 ft AGL. Transport winds.....East 15-20 mph until 1500, then north. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly cloudy. Slight chance of rain and snow showers until 2400. Chance of thunder...0 percent. Min Temperature.....28-32. 24 hr trend......7-10 degrees cooler. Max Humidity........96-99%. 24 hr trend......Little change. 20-foot winds.......North winds 8-16 mph. Gusts up to 30 mph decreasing to 20 mph after midnight. CWR.................0 percent. 15K FT MSL winds....Southwest 35-45 mph. Mixing height.......2000-2500 ft AGL. Transport winds.....North 15-20 mph until 0200. Light after 0500. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Mostly cloudy(55-60%) until 0900, then partly cloudy(40-50%) until 1200, then mostly cloudy(55-60%). Chance of thunder...0 percent. Max Temperature.....52-56. 24 hr trend......7-10 degrees warmer. Min Humidity........39-49%. 24 hr trend......35-50% drier. 20-foot winds.......North winds 4-8 mph until 1200, then east 4-9 mph. CWR.................0 percent. 15K FT MSL winds....Southwest 40-50 mph. Mixing height.......5000-6000 ft AGL. Transport winds.....Light winds until 1300, then east 10-15 mph. Smoke dispersal.....Poor until 1600, then fair. .TUESDAY NIGHT...Rain showers likely. Lows in the upper 30s. East winds 4-9 mph. .WEDNESDAY...Rain showers likely and chance of thunderstorms. Highs in the lower 60s. South winds 13-20 mph. .THURSDAY...Mostly cloudy. Chance of thunderstorms. Lows in the upper 30s. Highs in the upper 60s. Southeast winds 6-13 mph. .FRIDAY...Partly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows around 40. Highs in the upper 60s. North winds 6-13 mph. $$ COZ248-190015- Logan County- Including Crook, Merino, Sterling, and Peetz 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers likely until 1200, then rain showers. Chance of thunder...0 percent. Max Temperature.....43-47. 24 hr trend......25-35 degrees cooler. Min Humidity........76-82%. 24 hr trend......35-50% wetter. 20-foot winds.......Northeast winds 13-23 mph with gusts to around 35 mph. CWR.................20 percent increasing to 50 percent in the afternoon. 15K FT MSL winds....Southwest 40-50 mph. Mixing height.......2500-3000 ft AGL. Transport winds.....Northeast 20-25 mph. Smoke dispersal.....Fair. .TONIGHT... Sky/weather.........Mostly cloudy until 2400, then partly cloudy(35-45%). Slight chance of rain showers until 2100. Chance of thunder...0 percent. Min Temperature.....29-33. 24 hr trend......7-10 degrees cooler. Max Humidity........94-98%. 24 hr trend......2-4% drier. 20-foot winds.......North winds 14-24 mph with gusts to around 35 mph until 2400, then northwest 6-13 mph with gusts to around 20 mph. CWR.................0 percent. 15K FT MSL winds....Southwest 35-45 mph. Mixing height.......1500-2500 ft AGL. Transport winds.....North 20-25 mph until 2400, then 10-15 mph. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Partly cloudy(30-35%) until 0900, then mostly sunny until 1200, then partly cloudy(40-50%). Chance of thunder...0 percent. Max Temperature.....56-60. 24 hr trend......10-15 degrees warmer. Min Humidity........25-31%. 24 hr trend......35-50% drier. 20-foot winds.......North winds 4-12 mph. Gusts up to 20 mph in the morning. CWR.................0 percent. 15K FT MSL winds....West 35-45 mph. Mixing height.......7000-8000 ft AGL. Transport winds.....Northwest 10-15 mph until 1500, then light until 1600, then northwest around 10 mph. Smoke dispersal.....Poor. .TUESDAY NIGHT...Mostly cloudy. Slight chance of rain showers. Lows in the upper 30s. Southeast winds 4-7 mph. .WEDNESDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Highs around 60. South winds 13-23 mph. .THURSDAY...Mostly cloudy. Chance of thunderstorms. Lows in the upper 30s. Highs in the upper 60s. Southeast winds 7-14 mph. .FRIDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows around 40. Highs in the lower 70s. North winds 6-13 mph. $$ COZ249-190015- Washington County- Including Akron, Cope, Last Chance, and Otis 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers likely until 1200, then rain showers and slight chance of thunderstorms. Chance of thunder...20 percent. Max Temperature.....46-50. 24 hr trend......20-25 degrees cooler. Min Humidity........79-85%. 24 hr trend......35-50% wetter. 20-foot winds.......Northeast winds 14-24 mph with gusts to around 35 mph. CWR.................10 percent increasing to 50 percent in the afternoon. 15K FT MSL winds....Southwest 50-60 mph. Mixing height.......2500-3000 ft AGL. Transport winds.....East around 20 mph until 1600, then north. Smoke dispersal.....Fair. .TONIGHT... Sky/weather.........Mostly cloudy(60-65%). Chance of thunder...0 percent. Min Temperature.....29-33. 24 hr trend......7-10 degrees cooler. Max Humidity........96-99%. 24 hr trend......2-4% drier. 20-foot winds.......Breezy. North winds 15-25 mph with gusts to around 35 mph until 2400, then 8-15 mph with gusts to around 25 mph. CWR.................0 percent. 15K FT MSL winds....Southwest 40-50 mph. Mixing height.......1500-2500 ft AGL. Transport winds.....North 20-25 mph until 0100, then 10-15 mph. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Partly cloudy(35-45%) until 1500, then mostly cloudy(50-60%). Chance of thunder...0 percent. Max Temperature.....55-59. 24 hr trend......7-10 degrees warmer. Min Humidity........31-37%. 24 hr trend......35-50% drier. 20-foot winds.......Northwest winds 6-13 mph with gusts to around 20 mph until 1200, then northeast 4-9 mph. CWR.................0 percent. 15K FT MSL winds....Southwest 40-50 mph. Mixing height.......6500-7500 ft AGL. Transport winds.....North around 10 mph until 1500, then light until 1600, then northeast around 10 mph. Smoke dispersal.....Poor. .TUESDAY NIGHT...Mostly cloudy. Chance of rain showers. Lows in the upper 30s. Southeast winds 4-9 mph. .WEDNESDAY...Breezy. Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Highs around 60. Southeast winds 15-25 mph. .THURSDAY...Mostly cloudy. Chance of thunderstorms. Lows in the upper 30s. Highs in the upper 60s. Southeast winds 8-15 mph. .FRIDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows around 40. Highs around 70. North winds 8-15 mph. $$ COZ250-190015- Sedgwick County- Including Julesburg, Ovid, and Sedgwick 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers likely until 1500, then rain showers. Chance of thunder...0 percent. Max Temperature.....44-48. 24 hr trend......25-35 degrees cooler. Min Humidity........73-79%. 24 hr trend......35-50% wetter. 20-foot winds.......Northeast winds 14-24 mph with gusts to around 35 mph. CWR.................10 percent increasing to 20 percent in the afternoon. 15K FT MSL winds....Southwest 50-60 mph. Mixing height.......2000-3000 ft AGL. Transport winds.....Northeast 20-25 mph. Smoke dispersal.....Fair. .TONIGHT... Sky/weather.........Mostly cloudy until 0300, then partly cloudy(40-50%). Slight chance of rain showers until 2100. Chance of thunder...0 percent. Min Temperature.....29-33. 24 hr trend......7-10 degrees cooler. Max Humidity........100%. 24 hr trend......Little change. 20-foot winds.......North winds 10-20 mph. Gusts up to 35 mph decreasing to 25 mph after midnight. CWR.................0 percent. 15K FT MSL winds....Southwest 35-45 mph. Mixing height.......1500-2500 ft AGL. Transport winds.....North 20-25 mph until 0200, then northwest around 15 mph. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Partly cloudy(30-40%) until 0900, then mostly sunny until 1200, then partly cloudy. Chance of thunder...0 percent. Max Temperature.....57-61. 24 hr trend......10-15 degrees warmer. Min Humidity........24-28%. 24 hr trend......35-50% drier. 20-foot winds.......North winds 5-13 mph. Gusts up to 20 mph in the morning. CWR.................0 percent. 15K FT MSL winds....West 35-45 mph. Mixing height.......7500-8500 ft AGL. Transport winds.....Northwest 10-15 mph. Smoke dispersal.....Poor until 1200, then good. .TUESDAY NIGHT...Mostly cloudy. Lows in the upper 30s. Southeast winds 4-9 mph. .WEDNESDAY...Mostly cloudy. Slight chance of thunderstorms. Highs in the upper 50s. South winds 14-24 mph. .THURSDAY...Mostly cloudy. Chance of thunderstorms. Lows in the upper 30s. Highs in the mid 60s. Southeast winds 10-17 mph. .FRIDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows around 40. Highs around 70. North winds 7-14 mph. $$ COZ251-190015- Phillips County- Including Amherst, Haxtun, and Holyoke 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers likely until 1200, then chance of rain showers until 1500, then rain showers. Chance of thunder...0 percent. Max Temperature.....44-48. 24 hr trend......25-35 degrees cooler. Min Humidity........72-78%. 24 hr trend......35-50% wetter. 20-foot winds.......Northeast winds 14-23 mph with gusts to around 35 mph. CWR.................10 percent increasing to 20 percent in the afternoon. 15K FT MSL winds....Southwest 50-60 mph. Mixing height.......2000-3000 ft AGL. Transport winds.....Northeast 20-25 mph. Smoke dispersal.....Fair. .TONIGHT... Sky/weather.........Mostly cloudy until 0300, then partly cloudy(40-50%). Slight chance of rain showers until 2100. Chance of thunder...0 percent. Min Temperature.....Around 31. 24 hr trend......7-10 degrees cooler. Max Humidity........100%. 24 hr trend......Little change. 20-foot winds.......North winds 16-24 mph with gusts to around 35 mph until 2400, then northwest 8-14 mph with gusts to around 25 mph. CWR.................0 percent. 15K FT MSL winds....Southwest 45-55 mph. Mixing height.......1500-2500 ft AGL. Transport winds.....North 20-25 mph until 0300, then around 15 mph. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Partly cloudy(40-50%) until 0900, then mostly sunny until 1200, then partly cloudy. Chance of thunder...0 percent. Max Temperature.....58-62. 24 hr trend......10-15 degrees warmer. Min Humidity........24-28%. 24 hr trend......35-50% drier. 20-foot winds.......North winds 6-14 mph with gusts to around 20 mph. CWR.................0 percent. 15K FT MSL winds....Southwest 35-45 mph. Mixing height.......7500-8500 ft AGL. Transport winds.....Northwest 10-15 mph. Smoke dispersal.....Poor until 1600, then good. .TUESDAY NIGHT...Mostly cloudy. Lows in the upper 30s. Southeast winds 4-9 mph. .WEDNESDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Highs in the upper 50s. Southeast winds 14-24 mph. .THURSDAY...Mostly cloudy. Chance of thunderstorms. Lows in the upper 30s. Highs in the mid 60s. Southeast winds 9-16 mph. .FRIDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows around 40. Highs around 70. North winds 7-14 mph. $$ COZ246-190015- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Including Agate, Hugo, Limon, and Matheson 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Chance of rain showers until 1200, then rain showers and slight chance of thunderstorms. Chance of thunder...20 percent. Max Temperature.....47-53. 24 hr trend......20-25 degrees cooler. Min Humidity........73-83%. 24 hr trend......35-50% wetter. 20-foot winds.......Northeast winds 12-22 mph with gusts to around 35 mph. CWR.................10 percent increasing to 60 percent in the afternoon. 15K FT MSL winds....Southwest 45-55 mph. Mixing height.......2500-3500 ft AGL. Transport winds.....East 15-20 mph until 1500, then north 20-25 mph. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly cloudy. Slight chance of rain showers after 2100 until 2400. Chance of thunder...0 percent. Min Temperature.....26-30. 24 hr trend......7-10 degrees cooler. Max Humidity........100%. 24 hr trend......Little change. 20-foot winds.......Breezy. North winds 18-28 mph with gusts to around 40 mph until 2400, then 10-17 mph with gusts to around 30 mph. CWR.................0 percent. 15K FT MSL winds....Southwest 40-50 mph. Mixing height.......2000-2500 ft AGL. Transport winds.....North 20-25 mph until 0200, then around 15 mph. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Mostly cloudy until 0900, then partly cloudy(50-60%) until 1500, then mostly cloudy(60-65%). Chance of thunder...0 percent. Max Temperature.....53-57. 24 hr trend......4-7 degrees warmer. Min Humidity........35-45%. 24 hr trend......35-50% drier. 20-foot winds.......North winds 4-9 mph until 1200, then east. CWR.................0 percent. 15K FT MSL winds....Southwest 40-50 mph. Mixing height.......5500-6500 ft AGL. Transport winds.....North around 10 mph until 1100, then light until 1300, then southeast 10-15 mph. Smoke dispersal.....Poor until 1600, then good. .TUESDAY NIGHT...Cloudy. Chance of rain showers. Lows in the mid 30s. East winds 5-12 mph. .WEDNESDAY...Rain showers likely and chance of thunderstorms. Highs in the upper 50s. South winds 14-24 mph. .THURSDAY...Mostly cloudy. Chance of thunderstorms. Lows in the mid 30s. Highs in the mid 60s. Southeast winds 6-13 mph. .FRIDAY...Partly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows in the upper 30s. Highs in the upper 60s. North winds 6-13 mph. $$ COZ247-190015- Southeast Elbert County Below 6000 Feet/South Lincoln County- Including Forder, Karval, Kutch, and Punkin Center 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Mostly cloudy. Slight chance of rain showers until 0900, then chance of rain showers. Slight chance of thunderstorms after 1200. Chance of thunder...20 percent. Max Temperature.....55-65. 24 hr trend......20-25 degrees cooler. Min Humidity........47-57%. 24 hr trend......35-50% wetter. 20-foot winds.......East winds 10-16 mph with gusts to around 25 mph until 1200, then north 14-24 mph with gusts to around 45 mph. CWR.................10 percent. 15K FT MSL winds....Southwest 50-60 mph. Mixing height.......4500-5500 ft AGL. Transport winds.....East around 15 mph until 1100, then southeast until 1400, then south until 1500, then west until 1600, then north around 30 mph. Smoke dispersal.....Fair until 1400, then good. .TONIGHT... Sky/weather.........Mostly cloudy(50-60%) until 2100, then partly cloudy(50-60%) until 2400, then mostly cloudy(50-60%). Chance of thunder...0 percent. Min Temperature.....27-33. 24 hr trend......7-10 degrees cooler. Max Humidity........88-98%. 24 hr trend......Little change. 20-foot winds.......Windy. North winds 23-33 mph with gusts to around 45 mph until 2400, then 13-23 mph with gusts to around 35 mph. CWR.................0 percent. 15K FT MSL winds....Southwest 45-55 mph. Mixing height.......2500 ft AGL. Transport winds.....North 30-35 mph until 2400. Around 15 mph after 0400. Smoke dispersal.....Fair. .TUESDAY... Sky/weather.........Mostly cloudy(50-60%) until 0900, then mostly sunny until 1200, then partly cloudy(30-40%). Chance of thunder...0 percent. Max Temperature.....56-62. 24 hr trend......2-4 degrees warmer. Min Humidity........31-35%. 24 hr trend......25-35% drier. 20-foot winds.......North winds 6-13 mph until 1200, then east. Gusts up to 20 mph. CWR.................0 percent. 15K FT MSL winds....Southwest 45-55 mph. Mixing height.......6000-7000 ft AGL. Transport winds.....North 10-15 mph until 1000, then light until 1300, then southeast 10-15 mph. Smoke dispersal.....Poor until 1600, then good. .TUESDAY NIGHT...Mostly cloudy. Chance of rain showers. Lows in the mid 30s. East winds 8-15 mph. .WEDNESDAY...Rain showers likely and chance of thunderstorms. Highs in the upper 50s. Southeast winds 14-24 mph. .THURSDAY...Mostly cloudy. Chance of thunderstorms. Lows in the upper 30s. Highs in the upper 60s. Southeast winds 6-13 mph. .FRIDAY...Partly cloudy. Slight chance of thunderstorms. Lows in the upper 30s. Highs in the upper 60s. Northeast winds 8-15 mph. $$ COZ215-190015- Larimer and Boulder Counties Between 6000 and 9000 Feet- Including Estes Park, Glendevey, Laramie River Valley, Nederland, and Red Feather Lakes 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers until 1500. Snow showers. Slight chance of thunderstorms after 1200. Chance of thunder...20 percent. Max Temperature.....31-39. 24 hr trend......15-20 degrees cooler. Min Humidity........78-88%. 24 hr trend......35-50% wetter. 20-foot winds....... Valleys/lwr slopes...Northeast winds 7-14 mph with gusts to around 25 mph. Ridges/upr slopes....Northeast winds 6-14 mph with gusts to around 25 mph. CWR.................90 percent decreasing to 80 percent in the afternoon. 15K FT MSL winds....Southwest 35-45 mph. Mixing height.......1500-2500 ft AGL. Transport winds.....East 15-20 mph until 1500, then northeast. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly cloudy(60-65%). Snow showers likely until 2100, then chance of snow showers until 0300, then slight chance of snow showers. Chance of thunder...0 percent. Min Temperature.....20-28. 24 hr trend......4-7 degrees cooler. Max Humidity........90-100%. 24 hr trend......Little change. 20-foot winds....... Valleys/lwr slopes...North winds 4-8 mph with gusts to around 20 mph until 2400, then northwest 4-6 mph. Ridges/upr slopes....North winds 4-7 mph until 2400, then northwest 4-6 mph. CWR.................20 percent decreasing to 10 percent after midnight. 15K FT MSL winds....West 25-35 mph. Mixing height.......1500-2500 ft AGL. Transport winds.....North 10-15 mph until 0100, then light. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Mostly cloudy(60-65%). Slight chance of snow showers until 1200, then snow showers likely with possible rain showers and thunderstorms. Chance of thunder...20 percent. Max Temperature.....35-45. 24 hr trend......4-7 degrees warmer. Min Humidity........67-77%. 24 hr trend......Little change. 20-foot winds....... Valleys/lwr slopes...East winds 4-8 mph. Ridges/upr slopes....East winds 4-8 mph. CWR.................0 percent increasing to 20 percent in the afternoon. 15K FT MSL winds....Southwest 25-35 mph. Mixing height.......3000-4000 ft AGL. Transport winds.....Light winds until 0900, then southeast 10-15 mph. Smoke dispersal.....Poor. .TUESDAY NIGHT...Mostly cloudy. Chance of snow showers and rain showers. Lows in the upper 20s. South winds 4-8 mph. .WEDNESDAY...Not as cool. Mostly cloudy. Chance of thunderstorms and slight chance of snow showers. Highs in the lower 50s. Southeast winds 4-6 mph. .THURSDAY...Mostly cloudy. Chance of thunderstorms. Lows in the lower 30s. Highs in the upper 50s. West winds 4-6 mph. .FRIDAY...Mostly cloudy. Chance of thunderstorms. Lows in the mid 30s. Highs in the lower 60s. West winds 4-7 mph. $$ COZ216-190015- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including Bailey, Central City, Evergreen, Georgetown, Idaho Springs, Northern Rampart Range, Tarryall, and Westcreek 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Slight chance of thunderstorms until 1200. Snow showers and rain showers. Chance of thunderstorms after 1200. Chance of thunder...30 percent. Max Temperature.....36-46. 24 hr trend......15-20 degrees cooler. Min Humidity........69-79%. 24 hr trend......25-35% wetter. 20-foot winds....... Valleys/lwr slopes...Northeast winds 5-13 mph with gusts to around 25 mph. Ridges/upr slopes....Southeast winds 5-12 mph until 1200, then north 7-14 mph. Gusts up to 25 mph. CWR.................70 percent increasing to 80 percent in the afternoon. 15K FT MSL winds....Southwest 35-45 mph. Mixing height.......2500-3500 ft AGL. Transport winds.....Southeast 10-15 mph until 1100, then around 20 mph until 1200, then north. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly cloudy. Snow showers and rain showers likely until 2100, then chance of snow showers until 0300, then slight chance of snow showers. Chance of thunder...0 percent. Min Temperature.....23-31. 24 hr trend......7-10 degrees cooler. Max Humidity........90-100%. 24 hr trend......Little change. 20-foot winds....... Valleys/lwr slopes...Northeast winds 4-9 mph. Gusts up to 20 mph in the evening. Ridges/upr slopes....Northeast winds 4-9 mph. Gusts up to 25 mph in the evening. CWR.................10 percent. 15K FT MSL winds....Southwest 30-40 mph. Mixing height.......1500-2000 ft AGL. Transport winds.....North around 10 mph until 0100, then light. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Mostly cloudy. Slight chance of snow showers after 0900 until 1200, then rain showers, snow showers likely and slight chance of thunderstorms. Chance of thunder...20 percent. Max Temperature.....37-47. 24 hr trend......2-4 degrees warmer. Min Humidity........68-78%. 24 hr trend......2-4% wetter. 20-foot winds....... Valleys/lwr slopes...East winds 4-12 mph. Gusts up to 20 mph in the afternoon. Ridges/upr slopes....East winds 4-12 mph. Gusts up to 20 mph in the afternoon. CWR.................10 percent increasing to 30 percent in the afternoon. 15K FT MSL winds....Southwest 30-40 mph. Mixing height.......3000-4000 ft AGL. Transport winds.....Light winds until 1000, then east 10-15 mph until 1600, then northeast. Smoke dispersal.....Poor. .TUESDAY NIGHT...Rain showers and snow showers. Lows in the lower 30s. East winds 4-8 mph. .WEDNESDAY...Not as cool. Mostly cloudy. Chance of thunderstorms and snow showers. Highs in the lower 50s. Southeast winds 4-6 mph. .THURSDAY...Partly cloudy. Chance of thunderstorms. Lows in the mid 30s. Highs around 60. Northwest winds 4-7 mph. .FRIDAY...Mostly cloudy. Chance of thunderstorms. Lows in the upper 30s. Highs in the lower 60s. Northwest winds 4-7 mph. $$ COZ211-190015- Jackson County Below 9000 Feet- Including Gould, North Park, Rand, Spicer, and Walden 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers until 0900. Snow showers and slight chance of thunderstorms. Chance of thunder...20 percent. Max Temperature.....37-43. 24 hr trend......10-15 degrees cooler. Min Humidity........71-81%. 24 hr trend......25-35% wetter. 20-foot winds.......East winds 8-15 mph until 1200, then northeast 7-14 mph. Gusts up to 25 mph. CWR.................80 percent increasing to 90 percent in the afternoon. 15K FT MSL winds....Southwest 30-40 mph. Mixing height.......Below 1000 FT AGL until 0700, then 2000-3000 ft AGL. Transport winds.....Southeast 15-20 mph until 1000, then 20-25 mph until 1400, then east around 15 mph until 1500, then north. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly cloudy. Chance of snow showers until 0300, then slight chance of snow showers. Chance of thunder...0 percent. Min Temperature.....19-23. 24 hr trend......10-15 degrees cooler. Max Humidity........91-100%. 24 hr trend......Little change. 20-foot winds.......North winds 4-12 mph. Gusts up to 20 mph in the evening. CWR.................10 percent. 15K FT MSL winds....Southwest 25-35 mph. Mixing height.......1000-2000 ft AGL. Transport winds.....North 10-15 mph until 2400, then light. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Mostly cloudy(60-65%) until 0900, then partly cloudy(40-50%) until 1200, then mostly cloudy(60-65%). Chance of snow showers and slight chance of thunderstorms after 1200. Chance of rain showers after 1500. Chance of thunder...20 percent. Max Temperature.....43-47. 24 hr trend......4-7 degrees warmer. Min Humidity........52-58%. 24 hr trend......20-25% drier. 20-foot winds.......Northwest winds 4-8 mph. CWR.................0 percent increasing to 10 percent in the afternoon. 15K FT MSL winds....Southwest 20-30 mph. Mixing height.......4500-5500 ft AGL. Transport winds.....Light winds until 1200, then west 10-15 mph. Smoke dispersal.....Poor. .TUESDAY NIGHT...Mostly cloudy. Slight chance of snow showers. Lows in the mid 20s. Northeast winds 4-6 mph. .WEDNESDAY...Partly cloudy. Slight chance of thunderstorms and snow showers. Highs in the lower 50s. West winds 4-7 mph. .THURSDAY...Partly cloudy. Chance of thunderstorms and snow showers. Lows in the mid 20s. Highs in the mid 50s. Southwest winds 4-8 mph. .FRIDAY...Partly cloudy. Slight chance of thunderstorms. Lows in the upper 20s. Highs in the upper 50s. Southwest winds 4-9 mph. $$ COZ213-190015- Grand and Summit Counties Below 9000 Feet- Including Dillon, Fraser, Granby, Grand Lake, Green Mountain Reservoir, Hot Sulphur Springs, Kremmling, Middle Park, and Williams Fork Reservoir 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Mostly cloudy. Slight chance of thunderstorms until 1200. Snow showers and rain showers. Chance of thunderstorms after 1200. Chance of thunder...40 percent. Max Temperature.....43-53. 24 hr trend......7-10 degrees cooler. Min Humidity........50-60%. 24 hr trend......20-25% wetter. 20-foot winds.......Southeast winds 9-16 mph with gusts to around 30 mph until 1200, then west 5-12 mph with gusts to around 20 mph. CWR.................50 percent increasing to 60 percent in the afternoon. 15K FT MSL winds....Southwest 30-40 mph. Mixing height.......5000-6000 ft AGL. Transport winds.....Southeast 15-20 mph until 0900, then south around 25 mph until 1200, then west. Smoke dispersal.....Poor until 0900, then good. .TONIGHT... Sky/weather.........Mostly cloudy. Chance of rain showers until 2100. Chance of snow showers until 0300, then slight chance of snow showers. Chance of thunder...0 percent. Min Temperature.....23-29. 24 hr trend......7-10 degrees cooler. Max Humidity........85-95%. 24 hr trend......2-4% wetter. 20-foot winds.......Northwest winds 4-9 mph. Gusts up to 20 mph in the evening. CWR.................10 percent. 15K FT MSL winds....Southwest 25-35 mph. Mixing height.......1500-2500 ft AGL. Transport winds.....West 15-20 mph until 2000. Light after 0300. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Partly cloudy(40-50%) until 1200, then mostly cloudy(55-60%). Chance of rain showers, snow showers and slight chance of thunderstorms after 1200. Chance of thunder...20 percent. Max Temperature.....45-55. 24 hr trend......Little change. Min Humidity........38-48%. 24 hr trend......15-20% drier. 20-foot winds.......West winds 4-9 mph. Gusts up to 20 mph in the afternoon. CWR.................0 percent increasing to 10 percent in the afternoon. 15K FT MSL winds....Southwest 25-35 mph. Mixing height.......7000-8000 ft AGL. Transport winds.....Light winds until 1000. West around 20 mph after 1300. Smoke dispersal.....Poor until 1200, then very good. .TUESDAY NIGHT...Mostly cloudy. Chance of rain and snow showers. Lows in the upper 20s. Northeast winds 4-6 mph. .WEDNESDAY...Partly cloudy. Chance of thunderstorms and slight chance of snow showers. Highs in the mid 50s. Northwest winds 4-6 mph. .THURSDAY...Partly cloudy. Chance of thunderstorms. Lows in the upper 20s. Highs in the upper 50s. West winds 4-6 mph. .FRIDAY...Partly cloudy. Chance of thunderstorms. Lows around 30. Highs around 60. Southwest winds 4-6 mph. $$ COZ214-190015- Central and Southeast Park County- Including Eleven Mile Canyon Reservoir, Fairplay, Guffey, Hartsel, Lake George, and South Park 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Mostly cloudy. Snow showers likely and slight chance of thunderstorms until 1200, then snow showers and chance of thunderstorms. Chance of thunder...30 percent. Max Temperature.....46-54. 24 hr trend......7-10 degrees cooler. Min Humidity........33-43%. 24 hr trend......10-15% wetter. 20-foot winds....... Valleys/lwr slopes...Breezy. South winds 16-26 mph until 1200, then southwest 13-23 mph. Gusts up to 40 mph. Ridges/upr slopes....Breezy. South winds 17-27 mph until 1200, then southwest 14-24 mph. Gusts up to 40 mph. CWR.................20 percent decreasing to 10 percent in the afternoon. 15K FT MSL winds....Southwest 35-45 mph. Mixing height.......8000-9000 ft AGL. Transport winds.....South 20-25 mph until 0900, then 30-35 mph until 1100, then southwest 35-40 mph until 1400, then west 25-30 mph until 1700, then around 20 mph. Smoke dispersal.....Fair until 0900, then excellent until 1600, then very good. .TONIGHT... Sky/weather.........Partly cloudy(40-50%) until 0300, then mostly cloudy(50-60%). Slight chance of snow showers until 2400. Chance of thunder...0 percent. Min Temperature.....24-30. 24 hr trend......7-10 degrees cooler. Max Humidity........81-91%. 24 hr trend......Little change. 20-foot winds....... Valleys/lwr slopes...Northwest winds 5-12 mph with gusts to around 25 mph until 2400, then southeast 4-7 mph. Ridges/upr slopes....West winds 6-13 mph with gusts to around 30 mph until 2400, then south 4-9 mph. CWR.................0 percent. 15K FT MSL winds....Southwest 25-35 mph. Mixing height.......6000-7000 ft AGL until 2000, then 1500 ft AGL. Transport winds.....West 15-20 mph until 2100, then around 10 mph until 2400, then southeast. Smoke dispersal.....Good until 2000, then poor. .TUESDAY... Sky/weather.........Mostly cloudy(60-65%) until 0900, then partly cloudy(40-50%) until 1200, then mostly cloudy(50-60%). Chance of snow showers after 1200 until 1500. Chance of rain showers after 1200. Slight chance of thunderstorms and snow showers after 1500. Chance of thunder...20 percent. Max Temperature.....43-53. 24 hr trend......2-4 degrees cooler. Min Humidity........43-53%. 24 hr trend......7-10% wetter. 20-foot winds....... Valleys/lwr slopes...Southeast winds 7-15 mph with gusts to around 30 mph. Ridges/upr slopes....Southeast winds 7-15 mph with gusts to around 30 mph. CWR.................0 percent increasing to 10 percent in the afternoon. 15K FT MSL winds....Southwest 30-40 mph. Mixing height.......5000-6000 ft AGL. Transport winds.....South 10-15 mph until 1200, then 20-25 mph. Smoke dispersal.....Poor until 1100, then good until 1300, then very good until 1600, then fair. .TUESDAY NIGHT...Snow showers with rain showers likely. Lows in the lower 30s. Southeast winds 6-13 mph. .WEDNESDAY...Mostly cloudy. Rain showers, chance of thunderstorms and snow showers. Highs in the lower 50s. South winds 5-12 mph. .THURSDAY...Partly cloudy. Slight chance of thunderstorms. Lows in the lower 30s. Highs in the upper 50s. West winds 4-9 mph. .FRIDAY...Partly cloudy. Slight chance of thunderstorms. Lows in the lower 30s. Highs around 60. West winds 4-8 mph. $$ COZ218-190015- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- Including Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, and Willow Creek Pass 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Snow showers. Slight chance of thunderstorms after 0900. Chance of thunder...20 percent. Max Temperature.....28-38. 24 hr trend......15-20 degrees cooler. Min Humidity........73-83%. 24 hr trend......35-50% wetter. 20-foot winds....... Valleys/lwr slopes...Southeast winds 9-16 mph until 1200, then northeast 5-12 mph. Gusts up to 30 mph. Ridges/upr slopes....East winds 9-17 mph with gusts to around 30 mph. CWR.................70 percent increasing to 90 percent in the afternoon. 15K FT MSL winds....Southwest 35-45 mph. Mixing height.......2500-3500 ft AGL. Transport winds.....Southeast 20-25 mph until 1300, then south around 15 mph until 1500, then northwest until 1700, then north. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly cloudy. Snow showers likely until 2400, then chance of snow showers until 0300, then slight chance of snow showers. Chance of thunder...0 percent. Min Temperature.....15-25. 24 hr trend......7-10 degrees cooler. Max Humidity........88-98%. 24 hr trend......Little change. 20-foot winds....... Valleys/lwr slopes...North winds 4-7 mph until 2400, then west 4-6 mph. Ridges/upr slopes....West winds 4-9 mph. CWR.................30 percent decreasing to 10 percent after midnight. 15K FT MSL winds....Southwest 25-35 mph. Mixing height.......1500-2500 ft AGL. Transport winds.....Northwest 10-15 mph until 2300, then west until 0500, then light. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Mostly cloudy(60-65%). Slight chance of snow showers after 0900 until 1200, then chance of snow showers and slight chance of thunderstorms. Chance of thunder...20 percent. Max Temperature.....31-41. 24 hr trend......2-4 degrees warmer. Min Humidity........58-68%. 24 hr trend......25-35% drier. 20-foot winds....... Valleys/lwr slopes...Southwest winds 4-6 mph until 1200, then north 4-8 mph. Ridges/upr slopes....Southwest winds 4-7 mph until 1200, then north 4-9 mph with gusts to around 20 mph. CWR.................0 percent increasing to 30 percent in the afternoon. 15K FT MSL winds....Southwest 20-30 mph. Mixing height.......5000-6000 ft AGL. Transport winds.....Light winds until 0700, then southwest 10-15 mph until 1600, then northwest. Smoke dispersal.....Poor until 1200, then fair. .TUESDAY NIGHT...Mostly cloudy. Chance of snow showers. Lows in the lower 20s. Southeast winds 4-6 mph. .WEDNESDAY...Partly cloudy. Chance of thunderstorms and snow showers. Highs in the lower 40s. West winds 4-7 mph. .THURSDAY...Partly cloudy. Chance of thunderstorms and snow showers. Lows in the lower 20s. Highs in the upper 40s. West winds 4-9 mph. .FRIDAY...Mostly cloudy. Chance of thunderstorms and slight chance of snow showers. Lows in the upper 20s. Highs around 50. Southwest winds 4-9 mph. $$ COZ212-190015- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Blue Sky, Puma Hills, Tarryall Mountains, Williams Fork Mountains, and Winter Park 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Mostly cloudy. Slight chance of thunderstorms until 1200. Snow showers. Chance of thunderstorms after 1200. Chance of thunder...30 percent. Max Temperature.....32-42. 24 hr trend......15-20 degrees cooler. Min Humidity........57-67%. 24 hr trend......20-25% wetter. 20-foot winds....... Valleys/lwr slopes...Southeast winds 12-18 mph with gusts to around 40 mph until 1200, then west 6-13 mph with gusts to around 30 mph. Ridges/upr slopes....Breezy. South winds 18-28 mph with gusts to around 45 mph until 1200, then southwest 10-17 mph with gusts to around 35 mph. CWR.................60 percent decreasing to 50 percent in the afternoon. 15K FT MSL winds....Southwest 30-40 mph. Mixing height.......6000-7000 ft AGL. Transport winds.....Southeast 20-25 mph until 0900, then south 25-30 mph until 1300, then west around 20 mph. Smoke dispersal.....Poor until 0900, then good. .TONIGHT... Sky/weather.........Mostly cloudy(50-60%). Chance of snow showers until 0300, then slight chance of snow showers. Chance of thunder...0 percent. Min Temperature.....18-28. 24 hr trend......10-15 degrees cooler. Max Humidity........82-92%. 24 hr trend......Little change. 20-foot winds....... Valleys/lwr slopes...West winds 4-9 mph. Gusts up to 25 mph in the evening. Ridges/upr slopes....West winds 4-12 mph. Gusts up to 30 mph in the evening. CWR.................10 percent. 15K FT MSL winds....Southwest 25-35 mph. Mixing height.......1500-2500 ft AGL. Transport winds.....West 10-15 mph. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Partly cloudy(50-60%) until 0900, then mostly cloudy(50-60%). Snow showers likely and slight chance of thunderstorms after 1200. Chance of rain showers after 1500. Chance of thunder...20 percent. Max Temperature.....34-44. 24 hr trend......2-4 degrees warmer. Min Humidity........54-64%. 24 hr trend......15-20% wetter. 20-foot winds....... Valleys/lwr slopes...South winds 5-13 mph with gusts to around 25 mph. Ridges/upr slopes....South winds 6-14 mph with gusts to around 30 mph. CWR.................0 percent increasing to 40 percent in the afternoon. 15K FT MSL winds....Southwest 25-35 mph. Mixing height.......7000-8000 ft AGL. Transport winds.....Southwest 10-15 mph until 1300, then south 15-20 mph. Smoke dispersal.....Poor until 1100, then good until 1700, then fair. .TUESDAY NIGHT...Snow showers. Lows in the upper 20s. Southeast winds 4-8 mph. .WEDNESDAY...Mostly cloudy. Chance of snow showers and thunderstorms. Highs in the mid 40s. West winds 4-9 mph. .THURSDAY...Partly cloudy. Chance of snow showers, rain showers and slight chance of thunderstorms. Lows in the mid 20s. Highs in the upper 40s. West winds 5-12 mph. .FRIDAY...Partly cloudy. Chance of thunderstorms and slight chance of snow showers. Lows in the upper 20s. Highs in the lower 50s. West winds 5-12 mph. $$ COZ217-190015- West Jackson and West Grand Counties Above 9000 Feet- Including East Slopes Park and Northern Gore Ranges, Gore Pass, and Rabbit Ears Pass 423 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Slight chance of thunderstorms until 1500. Snow showers. Chance of thunderstorms after 1500. Chance of thunder...30 percent. Max Temperature.....31-41. 24 hr trend......10-15 degrees cooler. Min Humidity........72-82%. 24 hr trend......35-50% wetter. 20-foot winds....... Valleys/lwr slopes...Southeast winds 8-15 mph until 1200, then north 7-14 mph. Gusts up to 25 mph. Ridges/upr slopes....Southeast winds 12-18 mph until 1200, then north 8-15 mph. Gusts up to 30 mph. CWR.................80 percent. 15K FT MSL winds....Southwest 25-35 mph. Mixing height.......Below 1000 FT AGL until 0800, then 4000-5000 ft AGL. Transport winds.....Southeast 15-20 mph until 1300, then west until 1400, then north. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly cloudy. Snow showers likely until 2100, then chance of snow showers until 0300, then slight chance of snow showers. Chance of thunder...0 percent. Min Temperature.....16-24. 24 hr trend......7-10 degrees cooler. Max Humidity........90-100%. 24 hr trend......Little change. 20-foot winds....... Valleys/lwr slopes...Northwest winds 4-12 mph. Gusts up to 25 mph in the evening. Ridges/upr slopes....Northwest winds 4-12 mph. Gusts up to 25 mph in the evening. CWR.................10 percent. 15K FT MSL winds....Southwest 20-30 mph. Mixing height.......1500-2500 ft AGL. Transport winds.....North 10-15 mph until 0100, then west until 0200, then light. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Mostly cloudy(55-60%) until 0900, then partly cloudy(40-50%) until 1200, then mostly cloudy(55-60%). Chance of snow showers and slight chance of thunderstorms after 1200. Chance of thunder...20 percent. Max Temperature.....36-46. 24 hr trend......4-7 degrees warmer. Min Humidity........52-62%. 24 hr trend......20-25% drier. 20-foot winds....... Valleys/lwr slopes...Northeast winds 4-6 mph until 1200, then northwest 4-9 mph with gusts to around 25 mph. Ridges/upr slopes....Southeast winds 4-9 mph until 1200, then west 7-14 mph with gusts to around 25 mph. CWR.................0 percent increasing to 10 percent in the afternoon. 15K FT MSL winds....Southwest 20-30 mph. Mixing height.......5500-6500 ft AGL. Transport winds.....Light winds until 1000, then west 10-15 mph. Smoke dispersal.....Poor until 1300, then good. .TUESDAY NIGHT...Partly cloudy. Lows in the lower 20s. Northeast winds 4-7 mph. .WEDNESDAY...Partly cloudy. Slight chance of thunderstorms and snow showers. Highs in the upper 40s. West winds 5-12 mph. .THURSDAY...Partly cloudy. Chance of thunderstorms and snow showers. Lows in the mid 20s. Highs around 50. Southwest winds 6-13 mph. .FRIDAY...Partly cloudy. Slight chance of thunderstorms. Lows in the upper 20s. Highs in the lower 50s. Southwest winds 6-13 mph. $$ .Outlook 6 to 10 Days... Temperatures Above Normal and Precipitation Above Normal. $$