FNUS55 KCYS 180749 FWFCYS Fire Weather Planning Forecast for Southeast Wyoming/Western Nebraska National Weather Service CHEYENNE WY 149 AM MDT Mon May 18 2026 ...WINTER STORM WARNINGS AND WINTER WEATHER ADVISORIES IN EFFECT FOR SOUTHEAST WYOMING WEST OF INTERSTATE 25... .DISCUSSION...No fire weather concerns over the next week due to widespread precipitation, much higher humidities, and record cold temperatures. A slow warming trend is expected after Tuesday, but temperatures will be slow to return to near average for this time of the year with several more chances for showers and thunderstorms nearly every day. NEZ434-182215- Pine Ridge/Nebraska National Forest- 149 AM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .TODAY... Sky/weather.........Cloudy. Snow showers until 1200. Showers. Slight chance of snow showers after 1200. Snow accumulation up to 1 inch. Max temperature.....37-42. 24 hr trend......25 degrees cooler. Min humidity........74-80 percent. 24 hr trend......38 percent wetter. 20-foot winds.......North around 15 mph with higher gusts. Chc of wetting rain.75 percent. Transport winds.....Northeast around 20 mph. Mixing height.......1700-2500 ft AGL. Smoke dispersal.....Poor to fair (38200-40400 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy until 2400, then partly cloudy. Slight chance of snow showers until 2200. Chance of showers until 2400Chance of snow showers after 2200 until 2400. Areas of frost after 2400 until 0300, then widespread frost. Min temperature.....27-32. 24 hr trend......5 degrees cooler. Max humidity........92-98 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......Northwest 5 to 10 mph. Gusts up to 25 mph decreasing to 15 mph after midnight. Chc of wetting rain.5 percent. Transport winds.....Northwest 10 to 15 mph. Mixing height.......500-2200 ft AGL. Smoke dispersal.....Poor (8300-20000 knot-ft). .TUESDAY... Sky/weather.........Partly cloudy until 0900, then mostly sunny. Widespread frost until 0700Areas of frost after 0700 until 0800. Max temperature.....53-59. 24 hr trend......18 degrees warmer. Min humidity........22-28 percent. 24 hr trend......52 percent drier. 20-foot winds.......West around 5 mph and gusty. Chc of wetting rain.Zero percent. Transport winds.....Northwest around 15 mph. Mixing height.......2000-4000 ft AGL increasing to 5600-7600 ft AGL in the afternoon. Smoke dispersal.....Poor to good (34700-80000 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Partly cloudy with chance of showers. Lows in the mid 30s. Highs in the mid 60s. South winds around 10 mph. .THURSDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs in the upper 60s. Southwest winds around 10 mph. .FRIDAY...Partly cloudy with chance of showers and thunderstorms. Lows in the upper 30s. Highs around 70. Northwest winds around 10 mph. .SATURDAY...Partly cloudy. Lows in the lower 40s. Highs in the upper 70s. .SUNDAY...Mostly clear. Lows in the upper 40s. Highs in the mid 80s. $$ NEZ435-182215- Box Butte/South Sioux/Niobrara River- 149 AM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .TODAY... Sky/weather.........Cloudy. Snow showers until 1200. Showers. Slight chance of thunderstorms and snow showers after 1200. Snow accumulation up to 1 inch. Max temperature.....37-42. 24 hr trend......26 degrees cooler. Min humidity........79-85 percent. 24 hr trend......48 percent wetter. 20-foot winds.......North around 15 mph with gusts to around 35 mph. Chc of wetting rain.50 percent. Transport winds.....Northeast around 25 mph. Mixing height.......1800-2600 ft AGL. Smoke dispersal.....Fair (46100-46200 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy until 2400, then partly cloudy. Chance of showers and snow showers until 2400. Widespread frost after 2400. Min temperature.....26-31. 24 hr trend......6 degrees cooler. Max humidity........93-99 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......Northwest 5 to 10 mph. Gusts up to 30 mph decreasing to 15 mph after midnight. Chc of wetting rain.5 percent. Transport winds.....North 15 to 20 mph. Mixing height.......600-2300 ft AGL. Smoke dispersal.....Poor (12400-29500 knot-ft). .TUESDAY... Sky/weather.........Mostly sunny. Widespread frost until 0800, then areas of frost until 0900. Max temperature.....54-59. 24 hr trend......16 degrees warmer. Min humidity........20-26 percent. 24 hr trend......57 percent drier. 20-foot winds.......Northwest around 5 mph and gusty. Chc of wetting rain.Zero percent. Transport winds.....Northwest around 15 mph. Mixing height.......2200-4200 ft AGL increasing to 5900-7900 ft AGL in the afternoon. Smoke dispersal.....Poor to good (37100-80900 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 30s. Highs in the lower 60s. South winds around 10 mph. .THURSDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the upper 30s. Highs in the upper 60s. South winds around 10 mph. .FRIDAY...Partly cloudy with chance of showers and thunderstorms. Lows in the upper 30s. Highs in the upper 60s. Northwest winds around 5 mph. .SATURDAY...Partly cloudy. Lows in the lower 40s. Highs in the upper 70s. .SUNDAY...Mostly clear. Lows in the mid 40s. Highs in the mid 80s. $$ NEZ436-182215- Lower North Platte River Basin/Scottsbluff National Monument- 149 AM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .TODAY... Sky/weather.........Cloudy. Showers. Slight chance of snow showers after 1000 until 1400. Slight chance of thunderstorms and snow showers after 1500. Snow accumulation up to 1 inch. Max temperature.....38-43. 24 hr trend......27 degrees cooler. Min humidity........75-81 percent. 24 hr trend......44 percent wetter. 20-foot winds.......Northeast around 15 mph with higher gusts. Chc of wetting rain.55 percent. Transport winds.....Northeast 20 to 25 mph. Mixing height.......2100-2900 ft AGL. Smoke dispersal.....Fair (46600-47100 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy until 2400, then partly cloudy. Slight chance of showers until 2400. Areas of frost after 2400 until 0300, then widespread frost. Min temperature.....27-32. 24 hr trend......6 degrees cooler. Max humidity........93-99 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......Northwest 5 to 10 mph. Gusts up to 30 mph decreasing to 15 mph after midnight. Chc of wetting rain.5 percent. Transport winds.....Northwest around 15 mph. Mixing height.......900-2600 ft AGL. Smoke dispersal.....Poor (13600-32300 knot-ft). .TUESDAY... Sky/weather.........Mostly sunny. Widespread frost until 0800Areas of frost after 0800 until 0900. Max temperature.....54-59. 24 hr trend......16 degrees warmer. Min humidity........23-29 percent. 24 hr trend......49 percent drier. 20-foot winds.......Northwest around 5 mph and gusty. Chc of wetting rain.Zero percent. Transport winds.....Northwest around 10 mph. Mixing height.......2200-4200 ft AGL increasing to 5700-7600 ft AGL in the afternoon. Smoke dispersal.....Poor to good (32200-70700 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the mid 30s. Highs in the lower 60s. South winds around 10 mph. .THURSDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the upper 30s. Highs in the upper 60s. South winds around 10 mph. .FRIDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the upper 30s. Highs in the lower 70s. Northwest winds around 10 mph. .SATURDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows in the lower 40s. Highs in the upper 70s. .SUNDAY...Mostly clear. Lows in the upper 40s. Highs in the mid 80s. $$ NEZ437-182215- Lodgepole Creek/Southern Nebraska Panhandle- 149 AM MDT Mon May 18 2026 ...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .TODAY... Sky/weather.........Cloudy. Slight chance of snow showers until 1200. Showers. Snow showers and slight chance of thunderstorms after 1200. Snow accumulation up to 1 inch. Max temperature.....38-43. 24 hr trend......30 degrees cooler. Min humidity........81-87 percent. 24 hr trend......55 percent wetter. 20-foot winds.......Northeast around 15 mph with gusts to around 35 mph. Chc of wetting rain.40 percent. Transport winds.....Northeast 20 to 25 mph. Mixing height.......1900-2800 ft AGL. Smoke dispersal.....Fair (46700-48400 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy until 2400, then partly cloudy. Slight chance of showers and snow showers until 2100. Widespread frost after 0400. Min temperature.....26-31. 24 hr trend......6 degrees cooler. Max humidity........94-100 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......Northwest 10 to 15 mph. Gusts up to 35 mph decreasing to 20 mph after midnight. Chc of wetting rain.5 percent. Transport winds.....North 15 to 20 mph. Mixing height.......900-2400 ft AGL. Smoke dispersal.....Poor (18300-36400 knot-ft). .TUESDAY... Sky/weather.........Partly cloudy. Widespread frost until 0900. Max temperature.....52-57. 24 hr trend......19 degrees warmer. Min humidity........26-32 percent. 24 hr trend......55 percent drier. 20-foot winds.......Northwest around 5 mph and gusty. Chc of wetting rain.Zero percent. Transport winds.....Northwest around 10 mph. Mixing height.......2100-4100 ft AGL increasing to 5600-7600 ft AGL in the afternoon. Smoke dispersal.....Poor to good (31700-66100 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Mostly cloudy with chance of showers and slight chance of thunderstorms. Lows in the mid 30s. Highs around 60. South winds around 10 mph. .THURSDAY...Partly cloudy with chance of showers and thunderstorms. Lows in the upper 30s. Highs in the upper 60s. South winds around 10 mph. .FRIDAY...Partly cloudy with chance of showers and thunderstorms. Lows in the upper 30s. Highs in the upper 60s. Northwest winds around 10 mph. .SATURDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows around 40. Highs in the upper 70s. .SUNDAY...Mostly clear. Lows in the mid 40s. Highs in the lower 80s. $$ WYZ417-182215- Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland- 149 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WARNING IN EFFECT FROM 5 AM TO 10 AM MDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .TODAY... Sky/weather.........Cloudy. Showers and snow showers. Snow accumulation up to 2 inches. Max temperature.....35-41. 24 hr trend......23 degrees cooler. Min humidity........74-80 percent. 24 hr trend......52 percent wetter. 20-foot winds.......North around 15 mph with gusts to around 35 mph. Chc of wetting rain.60 percent. Transport winds.....North around 20 mph. Mixing height.......1500-3500 ft AGL. Smoke dispersal.....Poor to fair (34400-52600 knot-ft). .TONIGHT... Sky/weather.........Cloudy until 2100, then partly cloudy. Slight chance of snow showers until 2100. Slight chance of showers until 2400. Widespread frost after 2400. Min temperature.....25-30. 24 hr trend......4 degrees cooler. Max humidity........92-98 percent. 24 hr trend......4 percent drier. Humidity recovery...Excellent. 20-foot winds.......Northwest 5 to 10 mph. Gusts up to 30 mph decreasing to 15 mph after midnight. Chc of wetting rain.5 percent. Transport winds.....Northwest 10 to 15 mph. Mixing height.......1200-3200 ft AGL decreasing to 400-1200 ft AGL after midnight. Smoke dispersal.....Poor (6100-28600 knot-ft). .TUESDAY... Sky/weather.........Partly cloudy until 0900, then mostly sunny. Widespread frost until 0900. Max temperature.....51-57. 24 hr trend......17 degrees warmer. Min humidity........26-32 percent. 24 hr trend......54 percent drier. 20-foot winds.......West around 5 mph and gusty. Chc of wetting rain.Zero percent. Transport winds.....West 10 to 15 mph. Mixing height.......2100-4100 ft AGL increasing to 5600-7600 ft AGL in the afternoon. Smoke dispersal.....Poor to good (30300-72900 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer. Mostly clear. Slight chance of showers. Lows around 30. Highs in the mid 60s. Southwest winds around 5 mph. .THURSDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the upper 30s. Highs in the mid 60s. West winds around 10 mph. .FRIDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the mid 30s. Highs in the upper 60s. Northwest winds around 5 mph. .SATURDAY...Partly cloudy. Slight chance of showers. Lows in the upper 30s. Highs in the mid 70s. .SUNDAY...Mostly clear. Lows in the mid 40s. Highs in the lower 80s. $$ WYZ418-182215- Middle North Platte River Basin/Niobrara and Converse High Plains- 149 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WARNING IN EFFECT FROM 5 AM TO 10 AM MDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .TODAY... Sky/weather.........Cloudy. Snow showers and showers. Snow accumulation of 1 to 5 inches. Max temperature.....32-37. 24 hr trend......25 degrees cooler. Min humidity........83-89 percent. 24 hr trend......56 percent wetter. 20-foot winds.......North around 15 mph with gusts to around 35 mph. Chc of wetting rain.70 percent. Transport winds.....North around 20 mph. Mixing height.......1300-2800 ft AGL. Smoke dispersal.....Poor to fair (35000-46300 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy until 2400, then partly cloudy. Chance of showers and snow showers until 2400. Widespread frost after 2400. Min temperature.....23-28. 24 hr trend......4 degrees cooler. Max humidity........93-99 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......Northwest 5 to 10 mph. Gusts up to 25 mph decreasing to 15 mph after midnight. Chc of wetting rain.5 percent. Transport winds.....Northwest 10 to 15 mph. Mixing height.......600-2600 ft AGL. Smoke dispersal.....Poor (8200-25200 knot-ft). .TUESDAY... Sky/weather.........Partly cloudy until 0900, then mostly sunny. Widespread frost until 0900Areas of frost after 0900 until 1000. Max temperature.....46-52. 24 hr trend......16 degrees warmer. Min humidity........35-41 percent. 24 hr trend......56 percent drier. 20-foot winds.......West around 5 mph and gusty. Chc of wetting rain.Zero percent. Transport winds.....West around 10 mph. Mixing height.......1600-3600 ft AGL increasing to 3900-5900 ft AGL in the afternoon. Smoke dispersal.....Poor to fair (20100-52300 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer. Mostly clear. Slight chance of showers. Lows in the upper 20s. Highs in the lower 60s. Southwest winds around 5 mph. .THURSDAY...Partly cloudy with chance of showers and thunderstorms. Lows in the mid 30s. Highs in the lower 60s. West winds around 5 mph. .FRIDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the mid 30s. Highs in the mid 60s. Northwest winds around 5 mph. .SATURDAY...Partly cloudy. Slight chance of showers. Lows in the upper 30s. Highs in the lower 70s. .SUNDAY...Mostly clear. Lows in the mid 40s. Highs in the upper 70s. $$ WYZ419-182215- North Laramie Range and Adjacent High Plains- 149 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .TODAY... Sky/weather.........Cloudy. Snow showers. Slight chance of thunderstorms after 1500. Snow accumulation of 2 to 12 inches. Max temperature.....26-32. 24 hr trend......21 degrees cooler. Min humidity........86-92 percent. 24 hr trend......56 percent wetter. 20-foot winds.......North around 15 mph with gusts to around 35 mph. Chc of wetting rain.80 percent. Transport winds.....Northeast around 25 mph. Mixing height.......700-2300 ft AGL. Smoke dispersal.....Poor to fair (30700-42000 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy until 0300, then partly cloudy. Chance of snow showers until 2400. Widespread frost after 2400. Min temperature.....17-25. 24 hr trend......6 degrees cooler. Max humidity........94-100 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......Northwest 5 to 10 mph. Gusts up to 25 mph decreasing to 15 mph after midnight. Chc of wetting rain.5 percent. Transport winds.....Northwest 10 to 15 mph. Mixing height.......400-2100 ft AGL. Smoke dispersal.....Poor (8100-18500 knot-ft). .TUESDAY... Sky/weather.........Partly cloudy. Widespread frost until 1000. Max temperature.....36-44. 24 hr trend......9 degrees warmer. Min humidity........54-60 percent. 24 hr trend......33 percent drier. 20-foot winds.......West around 5 mph and gusty. Chc of wetting rain.Zero percent. Transport winds.....West around 10 mph. Mixing height.......1000-3000 ft AGL. Smoke dispersal.....Poor (11100-20100 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer. Mostly clear. Lows in the mid 20s. Highs in the lower 50s. Southwest winds around 5 mph. .THURSDAY...Partly cloudy with chance of showers and thunderstorms. Lows in the lower 30s. Highs in the mid 50s. West winds around 10 mph. .FRIDAY...Partly cloudy with chance of showers, thunderstorms and snow showers. Lows in the mid 30s. Highs in the upper 50s. West winds around 10 mph. .SATURDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the upper 30s. Highs in the mid 60s. .SUNDAY...Mostly clear. Lows in the mid 40s. Highs in the lower 70s. $$ WYZ420-182215- North Laramie Valley/Shirley Basin- 149 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... .TODAY... Sky/weather.........Cloudy. Patchy blowing snow until 1200. Snow showers until 1500. Slight chance of thunderstorms after 1200. Snow showers likely after 1500. Snow accumulation of 1 to 7 inches. Max temperature.....29-34. 24 hr trend......26 degrees cooler. Min humidity........81-87 percent. 24 hr trend......59 percent wetter. 20-foot winds.......Northeast 10 to 15 mph with gusts to around 35 mph. Chc of wetting rain.50 percent. Transport winds.....Northeast around 25 mph. Mixing height.......800-2800 ft AGL. Smoke dispersal.....Poor to fair (39900-52200 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy until 0300, then partly cloudy. Chance of snow showers until 2400. Widespread frost after 2400 until 0100. Widespread frost after 0300. Min temperature.....17-22. 24 hr trend......6 degrees cooler. Max humidity........94-100 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......North around 5 mph in the evening becoming light. Chc of wetting rain.5 percent. Transport winds.....North around 15 mph becoming northwest around 5 mph after midnight. Mixing height.......500-2500 ft AGL. Smoke dispersal.....Poor (4600-17400 knot-ft). .TUESDAY... Sky/weather.........Partly cloudy. Widespread frost until 1000. Max temperature.....34-39. 24 hr trend......4 degrees warmer. Min humidity........66-72 percent. 24 hr trend......13 percent drier. 20-foot winds.......Light winds becoming southwest around 5 mph in the afternoon. Chc of wetting rain.Zero percent. Transport winds.....West 5 to 10 mph. Mixing height.......600-2600 ft AGL. Smoke dispersal.....Poor (6900-12800 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer. Mostly clear. Lows in the lower 20s. Highs around 50. Southwest winds around 5 mph. .THURSDAY...Partly cloudy with chance of showers and thunderstorms. Lows in the upper 20s. Highs in the mid 50s. Southwest winds around 5 mph. .FRIDAY...Partly cloudy with slight chance of showers, thunderstorms and snow showers. Lows in the lower 30s. Highs in the upper 50s. West winds around 5 mph. .SATURDAY...Partly cloudy. Slight chance of showers. Lows in the mid 30s. Highs in the mid 60s. .SUNDAY...Mostly clear. Lows in the upper 30s. Highs in the lower 70s. $$ WYZ421-182215- Ferris/Seminoe/Shirley Mountains- 149 AM MDT Mon May 18 2026 ...WINTER STORM WARNING IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... .TODAY... Sky/weather.........Cloudy. Patchy blowing snow until 1200. Slight chance of thunderstorms until 0900Snow showers until 1500, then snow showers likely. Snow accumulation of 5 to 14 inches. Max temperature.....27-32. 24 hr trend......27 degrees cooler. Min humidity........82-88 percent. 24 hr trend......57 percent wetter. 20-foot winds.......Northeast 15 to 20 mph. Gusts up to 55 mph decreasing to 45 mph in the afternoon. Chc of wetting rain.80 percent. Transport winds.....Northeast 25 to 30 mph. Mixing height.......600-2600 ft AGL. Smoke dispersal.....Fair (47400-56500 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy until 0300, then partly cloudy. Chance of snow showers until 2100. Slight chance of snow showers after 2100 until 2400. Widespread frost after 2300. Min temperature.....17-23. 24 hr trend......7 degrees cooler. Max humidity........93-99 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......North around 5 mph in the evening becoming light. Chc of wetting rain.5 percent. Transport winds.....North around 15 mph becoming northwest around 5 mph after midnight. Mixing height.......400-2200 ft AGL. Smoke dispersal.....Poor (3900-15300 knot-ft). .TUESDAY... Sky/weather.........Partly cloudy until 1200, then mostly sunny. Widespread frost until 1000. Max temperature.....33-38. 24 hr trend......5 degrees warmer. Min humidity........68-74 percent. 24 hr trend......13 percent drier. 20-foot winds.......Light winds becoming southwest around 5 mph in the afternoon. Chc of wetting rain.Zero percent. Transport winds.....West 5 to 10 mph. Mixing height.......400-1800 ft AGL. Smoke dispersal.....Poor (4700-8900 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Not as cool. Mostly clear. Lows in the lower 20s. Highs in the upper 40s. Southwest winds around 5 mph. .THURSDAY...Partly cloudy with chance of showers, thunderstorms and snow showers. Lows in the lower 30s. Highs in the lower 50s. Southwest winds around 5 mph. .FRIDAY...Partly cloudy. Slight chance of showers, thunderstorms and snow showers. Lows in the lower 30s. Highs in the upper 50s. West winds around 5 mph. .SATURDAY...Partly cloudy. Lows in the mid 30s. Highs in the mid 60s. .SUNDAY...Mostly clear. Lows in the lower 40s. Highs around 70. $$ WYZ422-182215- Central and West Carbon- 149 AM MDT Mon May 18 2026 ...WINTER STORM WARNING IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... .TODAY... Sky/weather.........Cloudy. Patchy blowing snow until 1200. Showers until 1200. Snow showers and slight chance of thunderstorms. Snow accumulation of 5 to 12 inches. Max temperature.....28-33. 24 hr trend......27 degrees cooler. Min humidity........82-88 percent. 24 hr trend......61 percent wetter. 20-foot winds.......Breezy. Northeast 20 to 25 mph with gusts to around 55 mph. Chc of wetting rain.80 percent. Transport winds.....Northeast around 30 mph. Mixing height.......700-2700 ft AGL. Smoke dispersal.....Fair to good (42300-61500 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy until 0300, then partly cloudy. Chance of snow showers until 2400Slight chance of snow showers after 2400. Widespread frost after 2400 until 0100Widespread frost after 0300. Min temperature.....17-22. 24 hr trend......8 degrees cooler. Max humidity........93-99 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......North around 10 mph and gusty in the evening becoming light. Chc of wetting rain.5 percent. Transport winds.....Northeast 10 to 15 mph. Mixing height.......400-2100 ft AGL. Smoke dispersal.....Poor (4000-17700 knot-ft). .TUESDAY... Sky/weather.........Partly cloudy until 0900, then mostly cloudy until 1200, then partly cloudy until 1500, then mostly sunny. Widespread frost until 0700Widespread frost after 0800 until 1000. Max temperature.....32-37. 24 hr trend......3 degrees warmer. Min humidity........73-79 percent. 24 hr trend......7 percent drier. 20-foot winds.......Light winds becoming west around 5 mph in the afternoon. Chc of wetting rain.Zero percent. Transport winds.....North 5 to 10 mph. Mixing height.......400-2000 ft AGL. Smoke dispersal.....Poor (3900-7800 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Not as cool. Mostly clear. Lows around 19. Highs in the upper 40s. Southwest winds around 5 mph. .THURSDAY...Partly cloudy with chance of showers and thunderstorms. Lows around 30. Highs in the mid 50s. Southwest winds around 5 mph. .FRIDAY...Partly cloudy with slight chance of showers, thunderstorms and snow showers. Lows in the lower 30s. Highs in the upper 50s. West winds around 5 mph. .SATURDAY...Partly cloudy. Lows in the mid 30s. Highs in the mid 60s. .SUNDAY...Mostly clear. Lows around 40. Highs in the lower 70s. $$ WYZ423-182215- Southwest Carbon County- 149 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... .TODAY... Sky/weather.........Cloudy. Showers until 1200. Snow showers and slight chance of thunderstorms. Snow accumulation up to 8 inches. Max temperature.....31-37. 24 hr trend......24 degrees cooler. Min humidity........82-88 percent. 24 hr trend......50 percent wetter. 20-foot winds.......Breezy. Northeast 20 to 25 mph. Gusts up to 60 mph decreasing to 50 mph in the afternoon. Chc of wetting rain.70 percent. Transport winds.....Northeast around 30 mph. Mixing height.......700-2700 ft AGL. Smoke dispersal.....Poor to good (33600-63300 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy until 2400, then partly cloudy. Slight chance of snow showers until 2100. Widespread frost after 2300. Min temperature.....19-24. 24 hr trend......9 degrees cooler. Max humidity........93-99 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......Northeast around 15 mph with gusts to around 40 mph becoming north around 5 mph after midnight. Chc of wetting rain.5 percent. Transport winds.....Northeast around 20 mph decreasing to around 10 mph after midnight. Mixing height.......400-2100 ft AGL. Smoke dispersal.....Poor (6900-25600 knot-ft). .TUESDAY... Sky/weather.........Partly cloudy until 1500, then mostly sunny. Widespread frost until 1000. Max temperature.....35-43. 24 hr trend......6 degrees warmer. Min humidity........61-67 percent. 24 hr trend......25 percent drier. 20-foot winds.......North around 5 mph and gusty. Chc of wetting rain.Zero percent. Transport winds.....North 5 to 10 mph. Mixing height.......800-2800 ft AGL. Smoke dispersal.....Poor (6600-19200 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer. Mostly clear. Lows in the lower 20s. Highs in the lower 50s. North winds around 5 mph. .THURSDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows in the lower 30s. Highs in the upper 50s. Southwest winds around 5 mph. .FRIDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows in the lower 30s. Highs in the lower 60s. West winds around 5 mph. .SATURDAY...Partly cloudy. Lows in the mid 30s. Highs in the upper 60s. .SUNDAY...Partly cloudy. Lows in the upper 30s. Highs in the lower 70s. $$ WYZ424-182215- Sierra Madre Range/Medicine Bow NF- 149 AM MDT Mon May 18 2026 ...WINTER STORM WARNING IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY... Sky/weather.........Cloudy. Showers and slight chance of thunderstorms until 1200. Snow showers. Chance of thunderstorms after 1200. Snow accumulation of 2 to 14 inches. Max temperature.....28-36. 24 hr trend......19 degrees cooler. Min humidity........80-86 percent. 24 hr trend......44 percent wetter. 20-foot winds.......East around 10 mph with gusts to around 35 mph. Chc of wetting rain.95 percent. Transport winds.....East around 20 mph. Mixing height.......600-2400 ft AGL. Smoke dispersal.....Poor (21600-33700 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy until 0300, then partly cloudy. Snow showers likely until 2100, then chance of snow showers until 2400, then slight chance of snow showers. Widespread frost after 2400. Snow accumulation up to 2 inches. Min temperature.....16-22. 24 hr trend......15 degrees cooler. Max humidity........93-99 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......Northeast around 10 mph and gusty in the evening becoming light. Chc of wetting rain.15 percent. Transport winds.....Northeast around 15 mph becoming east around 5 mph after midnight. Mixing height.......400-2000 ft AGL. Smoke dispersal.....Poor (4000-15600 knot-ft). .TUESDAY... Sky/weather.........Partly cloudy. Widespread frost until 1000. Slight chance of snow showers until 1200Chance of snow showers after 1200. Max temperature.....32-40. 24 hr trend......5 degrees warmer. Min humidity........56-62 percent. 24 hr trend......19 percent drier. 20-foot winds.......Light winds becoming northwest around 5 mph in the afternoon. Chc of wetting rain.5 percent. Transport winds.....East around 5 mph shifting to the northwest in the afternoon. Mixing height.......1800-3800 ft AGL. Smoke dispersal.....Poor (8900-29800 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Not as cool. Mostly clear. Lows in the lower 20s. Highs in the upper 40s. Southwest winds around 5 mph. .THURSDAY...Partly cloudy with chance of showers, thunderstorms and snow showers. Lows in the upper 20s. Highs in the lower 50s. Southwest winds around 5 mph. .FRIDAY...Partly cloudy with slight chance of showers, thunderstorms and snow showers. Lows around 30. Highs in the mid 50s. Southwest winds around 5 mph. .SATURDAY...Partly cloudy. Lows in the lower 30s. Highs around 60. .SUNDAY...Partly cloudy. Lows in the upper 30s. Highs in the mid 60s. $$ WYZ425-182215- Upper North Platte River Basin- 149 AM MDT Mon May 18 2026 ...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .TODAY... Sky/weather.........Cloudy. Patchy blowing snow until 1200. Showers until 0900Snow showers and slight chance of thunderstorms. Slight chance of showers after 0900 until 1000. Snow accumulation of 2 to 9 inches. Max temperature.....32-37. 24 hr trend......23 degrees cooler. Min humidity........77-83 percent. 24 hr trend......44 percent wetter. 20-foot winds.......Northeast around 15 mph with gusts to around 40 mph. Chc of wetting rain.85 percent. Transport winds.....East around 25 mph. Mixing height.......800-2800 ft AGL. Smoke dispersal.....Poor to fair (31800-48600 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy. Snow showers likely until 2100, then chance of snow showers until 2400, then slight chance of snow showers. Snow accumulation up to 1 inch. Min temperature.....18-23. 24 hr trend......10 degrees cooler. Max humidity........92-98 percent. 24 hr trend......4 percent drier. Humidity recovery...Excellent. 20-foot winds.......North around 10 mph and gusty in the evening becoming light. Chc of wetting rain.5 percent. Transport winds.....Northeast around 15 mph becoming north around 5 mph after midnight. Mixing height.......500-2500 ft AGL. Smoke dispersal.....Poor (4300-18900 knot-ft). .TUESDAY... Sky/weather.........Mostly cloudy until 1200, then partly cloudy. Widespread frost until 1000. Slight chance of snow showersSlight chance of showers after 1500. Max temperature.....36-41. 24 hr trend......1 degree warmer. Min humidity........61-67 percent. 24 hr trend......19 percent drier. 20-foot winds.......Light winds becoming northwest around 5 mph in the afternoon. Chc of wetting rain.5 percent. Transport winds.....North 5 to 10 mph. Mixing height.......800-2800 ft AGL. Smoke dispersal.....Poor (5500-16100 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer. Mostly clear. Lows in the lower 20s. Highs in the lower 50s. Southwest winds around 5 mph. .THURSDAY...Partly cloudy with chance of showers and thunderstorms. Lows in the upper 20s. Highs in the upper 50s. Southwest winds around 5 mph. .FRIDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows in the lower 30s. Highs around 60. West winds around 5 mph. .SATURDAY...Partly cloudy. Lows in the mid 30s. Highs in the upper 60s. .SUNDAY...Partly cloudy. Lows in the upper 30s. Highs in the lower 70s. $$ WYZ426-182215- Snowy Range/Medicine Bow NF- 149 AM MDT Mon May 18 2026 ...WINTER STORM WARNING IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY... Sky/weather.........Cloudy. Areas of blowing snow until 1200. Snow showers and slight chance of thunderstorms. Snow accumulation of 3 to 13 inches. Max temperature.....24-32. 24 hr trend......23 degrees cooler. Min humidity........85-91 percent. 24 hr trend......55 percent wetter. 20-foot winds.......East around 15 mph with gusts to around 40 mph. Chc of wetting rain.85 percent. Transport winds.....East 25 to 30 mph. Mixing height.......700-2700 ft AGL. Smoke dispersal.....Poor to fair (35400-48700 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy. Snow showers likely until 2400, then chance of snow showers. Snow accumulation up to 1 inch. Min temperature.....13-19. 24 hr trend......10 degrees cooler. Max humidity........94-100 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......North around 5 mph in the evening becoming light. Chc of wetting rain.10 percent. Transport winds.....Northeast 5 to 10 mph. Mixing height.......500-2300 ft AGL. Smoke dispersal.....Poor (4100-15900 knot-ft). .TUESDAY... Sky/weather.........Mostly cloudy until 0900, then partly cloudy. Widespread frost until 1000. Slight chance of snow showers until 1200, then chance of snow showers. Max temperature.....31-39. 24 hr trend......7 degrees warmer. Min humidity........62-68 percent. 24 hr trend......32 percent drier. 20-foot winds.......Southwest around 5 mph shifting to the northwest in the afternoon. Chc of wetting rain.5 percent. Transport winds.....West 5 to 10 mph. Mixing height.......1800-3800 ft AGL. Smoke dispersal.....Poor (10000-32000 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Not as cool. Partly cloudy. Slight chance of snow showers. Lows around 19. Highs in the mid 40s. Southwest winds around 5 mph. .THURSDAY...Partly cloudy with chance of showers, thunderstorms and snow showers. Lows in the mid 20s. Highs in the lower 50s. Southwest winds around 5 mph. .FRIDAY...Partly cloudy with chance of showers, snow showers and slight chance of thunderstorms. Lows in the upper 20s. Highs in the mid 50s. West winds around 5 mph. .SATURDAY...Partly cloudy. Lows in the lower 30s. Highs around 60. .SUNDAY...Mostly clear. Lows in the mid 30s. Highs in the mid 60s. $$ WYZ427-182215- North Snowy Range Foothills- 149 AM MDT Mon May 18 2026 ...WINTER STORM WARNING IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... .TODAY... Sky/weather.........Cloudy. Patchy blowing snow until 1200. Slight chance of thunderstorms until 0900Snow showers. Slight chance of thunderstorms after 1200. Snow accumulation of 5 to 9 inches. Max temperature.....29-34. 24 hr trend......26 degrees cooler. Min humidity........85-91 percent. 24 hr trend......65 percent wetter. 20-foot winds.......East around 20 mph with gusts to around 45 mph becoming northeast around 10 mph with higher gusts in the afternoon. Chc of wetting rain.85 percent. Transport winds.....Northeast 25 to 30 mph. Mixing height.......700-2500 ft AGL. Smoke dispersal.....Poor to fair (37400-44100 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy until 0300, then partly cloudy. Snow showers likely until 2400, then slight chance of snow showers. Snow accumulation up to 1 inch. Min temperature.....17-22. 24 hr trend......9 degrees cooler. Max humidity........100 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......North around 5 mph shifting to the west after midnight. Chc of wetting rain.5 percent. Transport winds.....Northeast around 10 mph shifting to the west after midnight. Mixing height.......500-2100 ft AGL. Smoke dispersal.....Poor (4400-15300 knot-ft). .TUESDAY... Sky/weather.........Partly cloudy until 0900, then mostly cloudy until 1200, then partly cloudy. Widespread frost until 1000. Slight chance of snow showers after 1200. Max temperature.....33-38. 24 hr trend......5 degrees warmer. Min humidity........69-75 percent. 24 hr trend......17 percent drier. 20-foot winds.......West around 5 mph. Chc of wetting rain.5 percent. Transport winds.....Northwest 5 to 10 mph. Mixing height.......500-1900 ft AGL. Smoke dispersal.....Poor (5000-10900 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Not as cool. Mostly clear. Lows in the lower 20s. Highs in the upper 40s. Southwest winds around 5 mph. .THURSDAY...Partly cloudy with chance of showers and thunderstorms. Lows in the upper 20s. Highs in the mid 50s. Southwest winds around 5 mph. .FRIDAY...Partly cloudy with chance of showers, thunderstorms and slight chance of snow showers. Lows in the lower 30s. Highs in the upper 50s. West winds around 5 mph. .SATURDAY...Partly cloudy. Lows in the upper 30s. Highs in the mid 60s. .SUNDAY...Mostly clear. Lows in the lower 40s. Highs around 70. $$ WYZ428-182215- Southern Laramie Valley- 149 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .TODAY... Sky/weather.........Cloudy. Slight chance of showers until 1200. Snow showers. Slight chance of thunderstorms after 1200. Snow accumulation of 2 to 6 inches. Max temperature.....30-35. 24 hr trend......25 degrees cooler. Min humidity........84-90 percent. 24 hr trend......53 percent wetter. 20-foot winds.......Northeast around 15 mph with gusts to around 35 mph. Chc of wetting rain.65 percent. Transport winds.....Northeast 20 to 25 mph. Mixing height.......900-2900 ft AGL. Smoke dispersal.....Poor to fair (37700-46500 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy. Chance of snow showers until 2400, then slight chance of snow showers. Min temperature.....18-23. 24 hr trend......8 degrees cooler. Max humidity........100 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......North around 5 mph shifting to the west after midnight. Chc of wetting rain.5 percent. Transport winds.....North around 15 mph decreasing to around 5 mph after midnight. Mixing height.......900-2500 ft AGL. Smoke dispersal.....Poor (7800-19200 knot-ft). .TUESDAY... Sky/weather.........Mostly cloudy until 1200, then partly cloudy. Widespread frost until 1000. Chance of snow showers after 1200. Chance of showers after 1500. Max temperature.....36-41. 24 hr trend......8 degrees warmer. Min humidity........63-69 percent. 24 hr trend......24 percent drier. 20-foot winds.......Southwest around 5 mph shifting to the east in the afternoon. Chc of wetting rain.5 percent. Transport winds.....Northwest 5 to 10 mph. Mixing height.......1100-3100 ft AGL. Smoke dispersal.....Poor (6700-20500 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer. Partly cloudy with slight chance of showers and snow showers. Lows in the mid 20s. Highs in the lower 50s. Southwest winds around 5 mph. .THURSDAY...Partly cloudy with chance of showers and thunderstorms. Lows in the upper 20s. Highs in the upper 50s. Southwest winds around 5 mph. .FRIDAY...Partly cloudy with chance of showers, slight chance of thunderstorms and snow showers. Lows in the lower 30s. Highs around 60. West winds around 5 mph. .SATURDAY...Partly cloudy. Lows in the mid 30s. Highs in the mid 60s. .SUNDAY...Mostly clear. Lows around 40. Highs in the lower 70s. $$ WYZ429-182215- Southern Laramie Range- 149 AM MDT Mon May 18 2026 ...WINTER STORM WARNING IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .TODAY... Sky/weather.........Cloudy. Snow showers until 1500. Slight chance of thunderstorms after 1200. Snow showers likely after 1500. Snow accumulation of 3 to 6 inches. Max temperature.....27-32. 24 hr trend......26 degrees cooler. Min humidity........90-96 percent. 24 hr trend......56 percent wetter. 20-foot winds.......Northeast around 15 mph with gusts to around 35 mph. Chc of wetting rain.75 percent. Transport winds.....Northeast 20 to 25 mph. Mixing height.......700-2500 ft AGL. Smoke dispersal.....Poor to fair (30800-42100 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy until 0300, then partly cloudy. Chance of snow showers until 2400, then slight chance of snow showers. Min temperature.....18-23. 24 hr trend......7 degrees cooler. Max humidity........100 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......Northwest 5 to 10 mph. Gusts up to 25 mph in the evening. Chc of wetting rain.5 percent. Transport winds.....North 10 to 15 mph. Mixing height.......600-2100 ft AGL. Smoke dispersal.....Poor (8900-18700 knot-ft). .TUESDAY... Sky/weather.........Partly cloudy until 1500, then mostly cloudy. Widespread frost until 1000. Chance of snow showers after 1200. Chance of showers after 1500. Max temperature.....34-39. 24 hr trend......8 degrees warmer. Min humidity........64-70 percent. 24 hr trend......26 percent drier. 20-foot winds.......Southwest around 5 mph shifting to the south in the afternoon. Chc of wetting rain.5 percent. Transport winds.....West around 10 mph shifting to the north in the afternoon. Mixing height.......1100-3100 ft AGL. Smoke dispersal.....Poor (9400-22000 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Not as cool. Partly cloudy. Chance of showers, snow showers and slight chance of thunderstorms. Lows in the upper 20s. Highs in the upper 40s. South winds around 5 mph. .THURSDAY...Partly cloudy with chance of showers and thunderstorms. Lows in the lower 30s. Highs in the mid 50s. Southwest winds around 5 mph. .FRIDAY...Partly cloudy with chance of showers, slight chance of thunderstorms and snow showers. Lows in the lower 30s. Highs in the upper 50s. Northwest winds around 5 mph. .SATURDAY...Partly cloudy. Slight chance of showers. Lows in the mid 30s. Highs in the lower 60s. .SUNDAY...Mostly clear. Lows in the lower 40s. Highs in the upper 60s. $$ WYZ430-182215- Laramie Foothills and High Plains- 149 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .TODAY... Sky/weather.........Cloudy. Showers until 1200. Snow showers. Slight chance of thunderstorms and showers after 1200. Snow accumulation of 2 to 4 inches. Max temperature.....31-36. 24 hr trend......27 degrees cooler. Min humidity........89-95 percent. 24 hr trend......63 percent wetter. 20-foot winds.......Northeast around 15 mph with higher gusts. Chc of wetting rain.80 percent. Transport winds.....Northeast around 20 mph. Mixing height.......1100-2500 ft AGL. Smoke dispersal.....Poor to fair (32200-40100 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy until 0300, then partly cloudy. Chance of snow showers and showers until 2400. Widespread frost after 0200. Min temperature.....21-26. 24 hr trend......7 degrees cooler. Max humidity........100 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......Northwest 5 to 10 mph. Gusts up to 30 mph decreasing to 20 mph after midnight. Chc of wetting rain.5 percent. Transport winds.....North around 15 mph. Mixing height.......1000-2200 ft AGL. Smoke dispersal.....Poor (15300-26700 knot-ft). .TUESDAY... Sky/weather.........Partly cloudy. Widespread frost until 1000. Slight chance of snow showers after 1200. Slight chance of showers after 1500. Max temperature.....42-48. 24 hr trend......12 degrees warmer. Min humidity........47-53 percent. 24 hr trend......54 percent drier. 20-foot winds.......West around 5 mph. Chc of wetting rain.5 percent. Transport winds.....Northwest around 10 mph. Mixing height.......1200-3200 ft AGL increasing to 3200-5200 ft AGL in the afternoon. Smoke dispersal.....Poor (12400-34400 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer. Mostly cloudy. Chance of showers, slight chance of thunderstorms and snow showers. Lows in the lower 30s. Highs in the upper 50s. South winds around 10 mph. .THURSDAY...Partly cloudy with showers likely and chance of thunderstorms. Lows in the mid 30s. Highs in the lower 60s. Southwest winds around 5 mph. .FRIDAY...Partly cloudy with chance of showers and thunderstorms. Lows in the mid 30s. Highs in the mid 60s. Northwest winds around 10 mph. .SATURDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the upper 30s. Highs around 70. .SUNDAY...Mostly clear. Lows in the mid 40s. Highs in the mid 70s. $$ WYZ431-182215- Laramie East High Plains- 149 AM MDT Mon May 18 2026 ...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .TODAY... Sky/weather.........Cloudy. Showers and snow showers until 1500. Slight chance of thunderstorms after 1200. Showers and snow showers likely after 1500. Snow accumulation of 1 to 2 inches. Max temperature.....34-39. 24 hr trend......27 degrees cooler. Min humidity........84-90 percent. 24 hr trend......58 percent wetter. 20-foot winds.......Northeast around 15 mph with higher gusts. Chc of wetting rain.80 percent. Transport winds.....Northeast around 20 mph. Mixing height.......1800-2900 ft AGL. Smoke dispersal.....Poor to fair (39400-42900 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy until 0300, then partly cloudy. Chance of showers and snow showers until 2400. Widespread frost after 0200. Min temperature.....24-29. 24 hr trend......6 degrees cooler. Max humidity........94-100 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......Northwest 5 to 10 mph. Gusts up to 30 mph decreasing to 15 mph after midnight. Chc of wetting rain.5 percent. Transport winds.....North 15 to 20 mph. Mixing height.......1000-2400 ft AGL. Smoke dispersal.....Poor (17800-31400 knot-ft). .TUESDAY... Sky/weather.........Partly cloudy. Widespread frost until 0900, then areas of frost until 1000. Max temperature.....48-53. 24 hr trend......13 degrees warmer. Min humidity........33-39 percent. 24 hr trend......53 percent drier. 20-foot winds.......Northwest around 5 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest around 10 mph. Mixing height.......1700-3700 ft AGL increasing to 4600-6500 ft AGL in the afternoon. Smoke dispersal.....Poor to fair (17800-47900 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the mid 30s. Highs around 60. South winds around 10 mph. .THURSDAY...Partly cloudy with chance of showers and thunderstorms. Lows in the upper 30s. Highs in the mid 60s. Southwest winds around 10 mph. .FRIDAY...Partly cloudy with chance of showers and thunderstorms. Lows in the mid 30s. Highs in the upper 60s. Northwest winds around 10 mph. .SATURDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows around 40. Highs in the mid 70s. .SUNDAY...Mostly clear. Lows in the mid 40s. Highs around 80. $$ WYZ432-182215- Bordeaux/Chugwater/Wheatland- 149 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .TODAY... Sky/weather.........Cloudy. Showers and snow showers. Slight chance of thunderstorms after 1500. Snow accumulation of 1 to 2 inches. Max temperature.....34-39. 24 hr trend......28 degrees cooler. Min humidity........80-86 percent. 24 hr trend......44 percent wetter. 20-foot winds.......North around 15 mph with higher gusts. Chc of wetting rain.85 percent. Transport winds.....Northeast around 20 mph. Mixing height.......1500-2500 ft AGL. Smoke dispersal.....Poor (29900-36900 knot-ft). .TONIGHT... Sky/weather.........Cloudy until 2400, then partly cloudy. Chance of showers and snow showers until 2400. Areas of frost after 2400 until 0100, then widespread frost. Min temperature.....26-31. 24 hr trend......5 degrees cooler. Max humidity........100 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......Northwest 5 to 10 mph. Gusts up to 25 mph decreasing to 15 mph after midnight. Chc of wetting rain.5 percent. Transport winds.....Northwest 10 to 15 mph. Mixing height.......900-2400 ft AGL. Smoke dispersal.....Poor (13700-26600 knot-ft). .TUESDAY... Sky/weather.........Mostly sunny until 1200, then partly cloudy. Widespread frost until 0900Areas of frost after 0900 until 1000. Max temperature.....48-53. 24 hr trend......14 degrees warmer. Min humidity........35-41 percent. 24 hr trend......37 percent drier. 20-foot winds.......West around 5 mph. Chc of wetting rain.Zero percent. Transport winds.....West around 10 mph. Mixing height.......1500-3500 ft AGL increasing to 3900-5900 ft AGL in the afternoon. Smoke dispersal.....Poor to fair (15800-42900 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer. Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the lower 30s. Highs in the lower 60s. Southwest winds around 5 mph. .THURSDAY...Partly cloudy with chance of showers and thunderstorms. Lows in the upper 30s. Highs in the mid 60s. Southwest winds around 10 mph. .FRIDAY...Partly cloudy with chance of showers and thunderstorms. Lows in the upper 30s. Highs in the upper 60s. Northwest winds around 5 mph. .SATURDAY...Partly cloudy. Slight chance of showers. Lows in the lower 40s. Highs in the mid 70s. .SUNDAY...Mostly clear. Lows in the upper 40s. Highs in the lower 80s. $$ WYZ433-182215- Goshen/Middle-Lower North Platte River Basin- 149 AM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .TODAY... Sky/weather.........Cloudy. Showers and snow showers. Slight chance of thunderstorms after 1200. Snow accumulation up to 1 inch. Max temperature.....37-42. 24 hr trend......28 degrees cooler. Min humidity........72-78 percent. 24 hr trend......47 percent wetter. 20-foot winds.......North 10 to 15 mph with higher gusts. Chc of wetting rain.80 percent. Transport winds.....Northeast around 20 mph. Mixing height.......1700-2700 ft AGL. Smoke dispersal.....Poor (35700-39400 knot-ft). .TONIGHT... Sky/weather.........Mostly cloudy until 2400, then partly cloudy. Slight chance of snow showers until 1900. Chance of showers until 2400. Chance of snow showers after 1900 until 2100. Areas of frost after 2400 until 0300, then widespread frost. Min temperature.....27-32. 24 hr trend......5 degrees cooler. Max humidity........93-99 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......Northwest 5 to 10 mph. Gusts up to 25 mph decreasing to 15 mph after midnight. Chc of wetting rain.5 percent. Transport winds.....Northwest 10 to 15 mph. Mixing height.......800-2800 ft AGL. Smoke dispersal.....Poor (11500-27900 knot-ft). .TUESDAY... Sky/weather.........Partly cloudy until 0900, then mostly sunny. Widespread frost until 0800, then areas of frost until 0900. Max temperature.....52-57. 24 hr trend......14 degrees warmer. Min humidity........25-31 percent. 24 hr trend......44 percent drier. 20-foot winds.......West around 5 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest around 10 mph. Mixing height.......2000-4000 ft AGL increasing to 5400-7100 ft AGL in the afternoon. Smoke dispersal.....Poor to fair (21600-57600 knot-ft). .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer. Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the mid 30s. Highs in the mid 60s. South winds around 5 mph. .THURSDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the upper 30s. Highs in the upper 60s. Southwest winds around 5 mph. .FRIDAY...Partly cloudy with chance of showers and thunderstorms. Lows in the upper 30s. Highs in the lower 70s. Northwest winds around 5 mph. .SATURDAY...Mostly clear. Slight chance of showers. Lows in the lower 40s. Highs in the upper 70s. .SUNDAY...Mostly clear. Lows in the upper 40s. Highs in the mid 80s. $$