FNUS55 KGJT 181833 FWFGJT Fire Weather Planning Forecast for Wrn Colorado and Ern Utah National Weather Service Grand Junction CO 1233 PM MDT Mon May 18 2026 .DISCUSSION...Showers will continue through this evening before tapering off as drier air returns. Temperatures remain below normal through midweek, warming near to above normal Thursday onward. Light winds and moist surface level will limit fire weather concerns through the end of the week. ...GUSTY ERRATIC WINDS CAN BE EXPECTED NEAR ANY SHOWERS OR THUNDERSTORMS... ...THE SMOKE DATA IS CALCULATED FROM AN AVERAGE AT 6000 FEET MSL... COZ200-191045- Little Snake Forecast Area- 1233 PM MDT Mon May 18 2026 .TONIGHT... Sky/weather.........Partly cloudy (50-60%). Near 8000 feet, patchy blowing snow until 2400. Chc of lightning....0 percent. Min temperature.....19-29 F. Max humidity........83-98%. 20-foot winds.......North winds 10 to 15 mph with gusts to 30 mph in the evening becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................0 percent. 15K Ft MSL Winds....Northwest 10 to 15 mph. Mixing Height.......3500 ft AGL until 2100, then 1500 ft AGL. Transport Winds.....North 5 to 10 mph. Smoke dispersal.....Fair until 2100, then poor. .TUESDAY... Sky/weather.........Near 6000 feet, mostly sunny (20-30%). Near 8000 feet, partly cloudy (30-40%) until 1200, then mostly sunny (20-30%). Chc of lightning....0 percent. Max temperature.....44-54 F near 6000 feet 34-44 F near 8000 feet. Min humidity........42-52% near 6000 feet 48-58% near 8000 feet. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................0 percent. 15K Ft MSL Winds....Southwest 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Mixing Height.......7000 ft AGL. Transport Winds.....North 5 to 10 mph. Smoke dispersal.....Poor until 0900. Fair after 1500. .TUESDAY NIGHT... Sky/weather.........Mostly clear (20-30%). Chc of lightning....0 percent. Min temperature.....25-35 F. Max humidity........65-80%. 20-foot winds.......Downslope/downvalley winds 3 to 6 mph. Localized gusts up to 20 mph in the evening. CWR.................0 percent. 15K Ft MSL Winds....Southwest 20 to 25 mph. Mixing Height.......5500 ft AGL until 2000. 500 ft AGL after 2100. Transport Winds.....North 5 mph. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Mostly sunny (20-30%). Chc of lightning....0 percent. Max temperature.....53-63 F near 6000 feet 40-50 F near 8000 feet. Min humidity........26-36%. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................0 percent. 15K Ft MSL Winds....West 15 to 20 mph. Mixing Height.......2000 ft AGL until 1000, then 9000 ft AGL. Transport Winds.....North 5 mph until 1200, then west. Smoke dispersal.....Poor until 0900. Good after 1200. .FORECAST FOR DAY 3 THROUGH 7... .THURSDAY...Partly cloudy. Isolated showers and thunderstorms near 6000 feet and scattered showers and thunderstorms near 8000 feet. Lows 31-41. Highs 59-69. Winds less than 15 mph. .FRIDAY...Partly cloudy. Scattered showers and isolated thunderstorms near 6000 feet and scattered showers and isolated thunderstorms near 8000 feet. Lows 31-41. Highs 60-70. Winds less than 15 mph. .SATURDAY...Partly cloudy. Lows 34-44. Highs 67-77. Winds less than 15 mph. .SUNDAY...Mostly clear. Lows 38-48. Highs 73-83. .MEMORIAL DAY...Mostly clear. Lows 41-51. Highs 76-86. $$ COZ201-191045- Routt Forecast Area- 1233 PM MDT Mon May 18 2026 .TONIGHT... Sky/weather.........Mostly cloudy (60-70%) until 2400, then partly cloudy (50-60%). Scattered showers and isolated thunderstorms until 2400. Chc of lightning....20 percent. Min temperature.....20-30 F. Max humidity........84-99%. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................20 percent. 15K Ft MSL Winds....Southwest 20 to 25 mph becoming west 15 to 20 mph after midnight. Mixing Height.......2000 ft AGL. Transport Winds.....West 5 to 10 mph until 2400, then north. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Partly cloudy (40-50%). Isolated showers and thunderstorms after 1200. Chc of lightning....10 percent. Max temperature.....42-52 F. Min humidity........44-54%. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................10 percent. 15K Ft MSL Winds....Southwest 15 to 20 mph increasing to 20 to 25 mph in the afternoon. Mixing Height.......3500 ft AGL until 1100, then 6500 ft AGL. Transport Winds.....East 5 mph until 1200, then west 10 to 15 mph. Smoke dispersal.....Poor until 0900. Good after 1200. .TUESDAY NIGHT... Sky/weather.........Partly cloudy (40-50%). Isolated showers until 2400. Chc of lightning....0 percent. Min temperature.....22-32 F. Max humidity........78-93%. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................0 percent. 15K Ft MSL Winds....Southwest 25 to 35 mph. Mixing Height.......4500 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....North 5 to 10 mph until 2400, then east. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Partly cloudy (30-40%). Isolated showers until 1200, scattered showers and isolated thunderstorms after 1200. Chc of lightning....10 percent. Max temperature.....46-56 F. Min humidity........31-41%. 20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized gusts up to 25 mph in the afternoon. CWR.................10 percent. 15K Ft MSL Winds....Southwest 20 to 30 mph. Mixing Height.......1500 ft AGL until 0900, then 8000 ft AGL. Transport Winds.....West 5 to 10 mph. Smoke dispersal.....Poor until 0900. Very good after 1200. .FORECAST FOR DAY 3 THROUGH 7... .THURSDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 25-35. Highs 52-62. West winds 10 to 20 mph with gusts to 30 mph. .FRIDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 28-38. Highs 51-61. Winds less than 15 mph. .SATURDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 29-39. Highs 58-68. West winds 10 to 20 mph with gusts to 25 mph. .SUNDAY...Mostly clear. Isolated showers and thunderstorms. Lows 33-43. Highs 64-74. .MEMORIAL DAY...Mostly clear. Isolated showers and thunderstorms. Lows 37-47. Highs 67-77. $$ COZ202-191045- White River Forecast Area- 1233 PM MDT Mon May 18 2026 .TONIGHT... Sky/weather.........Partly cloudy (40-50%). Near 8000 feet, patchy blowing snow until 2400. Chc of lightning....0 percent. Min temperature.....19-29 F. Max humidity........84-99%. 20-foot winds.......Downslope/downvalley winds 3 to 6 mph. Localized gusts up to 30 mph in the evening. CWR.................0 percent. 15K Ft MSL Winds....Northwest 15 to 20 mph becoming west 10 to 15 mph after midnight. Mixing Height.......1500 ft AGL. Transport Winds.....Northeast 5 to 10 mph. Smoke dispersal.....Fair until 2100, then poor. .TUESDAY... Sky/weather.........Near 6000 feet, partly cloudy (30-40%) until 1200, then mostly sunny (10-20%). Near 8000 feet, partly cloudy (30-40%), isolated showers and thunderstorms after 1200. Chc of lightning....0 percent. Max temperature.....46-56 F near 6000 feet 39-49 F near 8000 feet. Min humidity........35-45% near 6000 feet 44-54% near 8000 feet. 20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized gusts up to 20 mph in the afternoon. CWR.................0 percent. 15K Ft MSL Winds....Southwest 10 to 15 mph increasing to 20 to 30 mph in the afternoon. Mixing Height.......7500 ft AGL. Transport Winds.....North 5 mph. Smoke dispersal.....Poor until 0900. Fair after 1500. .TUESDAY NIGHT... Sky/weather.........Mostly clear (10-20%). Chc of lightning....0 percent. Min temperature.....24-34 F. Max humidity........67-82%. 20-foot winds.......Downslope/downvalley winds 3 to 6 mph. Localized gusts up to 20 mph in the evening. CWR.................0 percent. 15K Ft MSL Winds....Southwest 20 to 30 mph. Mixing Height.......6500 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....Northeast 5 mph. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Mostly sunny (20-30%). Near 8000 feet, isolated showers and thunderstorms after 1200. Chc of lightning....0 percent. Max temperature.....53-63 F near 6000 feet 46-56 F near 8000 feet. Min humidity........21-31% near 6000 feet 29-39% near 8000 feet. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................0 percent. 15K Ft MSL Winds....Southwest 20 to 25 mph. Mixing Height.......1500 ft AGL until 1000, then 8500 ft AGL. Transport Winds.....North 5 mph until 1200, then west. Smoke dispersal.....Poor until 0900. Good after 1200. .FORECAST FOR DAY 3 THROUGH 7... .THURSDAY...Partly cloudy. Isolated showers and thunderstorms near 6000 feet and scattered showers and thunderstorms near 8000 feet. Lows 31-41. Highs 62-72. Winds less than 15 mph. .FRIDAY...Partly cloudy. Scattered showers and isolated thunderstorms near 6000 feet and scattered showers and isolated thunderstorms near 8000 feet. Lows 32-42. Highs 62-72. Winds less than 15 mph. .SATURDAY...Mostly clear. Isolated showers and thunderstorms near 8000 feet. Lows 34-44. Highs 68-78. Winds less than 15 mph. .SUNDAY...Mostly clear. Lows 38-48. Highs 75-85. .MEMORIAL DAY...Mostly clear. Isolated showers and thunderstorms near 8000 feet. Lows 41-51. Highs 77-87. $$ COZ203-191045- Lower Colorado River- 1233 PM MDT Mon May 18 2026 .TONIGHT... Sky/weather.........Partly cloudy (30-40%). Isolated showers until 2400. Chc of lightning....0 percent. Min temperature.....27-37 F near 6000 feet 20-30 F near 8000 feet. Max humidity........70-85%. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................10 percent. 15K Ft MSL Winds....Southwest 15 to 20 mph. Mixing Height.......4500 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....North 5 mph. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Mostly sunny (20-30%). Chc of lightning....0 percent. Max temperature.....53-63 F near 6000 feet 45-55 F near 8000 feet. Min humidity........26-36%. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................0 percent. 15K Ft MSL Winds....Southwest 20 to 25 mph increasing to 20 to 30 mph in the afternoon. Mixing Height.......2000 ft AGL until 1000, then 8500 ft AGL. Transport Winds.....Northeast 5 mph until 1200, then west. Smoke dispersal.....Poor until 0900. Good after 1200. .TUESDAY NIGHT... Sky/weather.........Mostly clear (20-30%). Chc of lightning....0 percent. Min temperature.....32-42 F near 6000 feet 26-36 F near 8000 feet. Max humidity........62-77%. 20-foot winds.......Downslope/downvalley winds 3 to 6 mph. Localized gusts up to 25 mph. CWR.................0 percent. 15K Ft MSL Winds....Southwest 25 to 35 mph. Mixing Height.......7000 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....Northwest 5 to 10 mph until 2400, then northeast. Smoke dispersal.....Fair until 2100, then poor. .WEDNESDAY... Sky/weather.........Partly cloudy (30-40%) until 1200, then mostly sunny (20-30%). Isolated showers and thunderstorms after 1200. Chc of lightning....10 percent. Max temperature.....58-68 F near 6000 feet 50-60 F near 8000 feet. Min humidity........18-28%. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................10 percent. 15K Ft MSL Winds....Southwest 20 to 30 mph decreasing to 20 to 25 mph in the afternoon. Mixing Height.......1000 ft AGL until 0900. 10000 ft AGL after 1000. Transport Winds.....North 5 mph until 1200, then west 10 to 15 mph. Smoke dispersal.....Poor until 0900. Very good after 1200. .FORECAST FOR DAY 3 THROUGH 7... .THURSDAY...Mostly clear. Isolated showers and thunderstorms. Lows 35-45. Highs 65-75. Winds less than 15 mph. .FRIDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 37-47. Highs 65-75. Winds less than 15 mph. .SATURDAY...Mostly clear. Isolated showers and thunderstorms. Lows 39-49. Highs 71-81. Winds less than 15 mph. .SUNDAY...Mostly clear. Lows 43-53. Highs 76-86. .MEMORIAL DAY...Mostly clear. Isolated showers and thunderstorms. Lows 46-56. Highs 78-88. $$ COZ205-191045- Colorado River Headwaters- 1233 PM MDT Mon May 18 2026 .TONIGHT... Sky/weather.........Partly cloudy (40-50%). Scattered showers and isolated thunderstorms until 2400. Chc of lightning....20 percent. Min temperature.....23-33 F. Max humidity........77-92%. 20-foot winds.......Downslope/downvalley winds 3 to 6 mph. Localized gusts up to 30 mph in the evening. CWR.................10 percent. 15K Ft MSL Winds....Southwest 20 to 30 mph. Mixing Height.......4500 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....West 5 mph. Smoke dispersal.....Poor. .TUESDAY... Sky/weather.........Mostly sunny (20-30%) until 1200, then partly cloudy (40-50%). Isolated showers and thunderstorms after 1200. Chc of lightning....10 percent. Max temperature.....51-61 F. Min humidity........34-44%. 20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized gusts up to 25 mph in the afternoon. CWR.................10 percent. 15K Ft MSL Winds....Southwest 20 to 30 mph. Mixing Height.......1500 ft AGL until 0900, then 8000 ft AGL. Transport Winds.....South 5 mph until 1200, then southwest 15 to 20 mph. Smoke dispersal.....Poor until 0900. Very good after 1200. .TUESDAY NIGHT... Sky/weather.........Partly cloudy (40-50%). Isolated showers and thunderstorms until 2400, scattered showers after 2400. Chc of lightning....10 percent. Min temperature.....27-37 F. Max humidity........78-93%. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................10 percent. 15K Ft MSL Winds....Southwest 25 to 35 mph increasing to 30 to 40 mph after midnight. Mixing Height.......5500 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....Northwest 5 to 10 mph until 2400, then east. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Partly cloudy (40-50%). Scattered showers until 1200, then numerous showers and isolated thunderstorms. Chc of lightning....20 percent. Max temperature.....53-63 F. Min humidity........30-40%. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................20 percent. 15K Ft MSL Winds....Southwest 25 to 35 mph decreasing to 20 to 25 mph in the afternoon. Mixing Height.......1500 ft AGL until 0900, then 8500 ft AGL. Transport Winds.....Southwest 5 to 10 mph until 1200, then west 15 to 20 mph. Smoke dispersal.....Poor until 0900. Very good after 1200. .FORECAST FOR DAY 3 THROUGH 7... .THURSDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 27-37. Highs 55-65. West winds 10 to 20 mph with gusts to 30 mph. .FRIDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 30-40. Highs 56-66. Winds less than 15 mph. .SATURDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 31-41. Highs 61-71. Winds less than 15 mph. .SUNDAY...Mostly clear. Isolated showers and thunderstorms. Lows 34-44. Highs 67-77. .MEMORIAL DAY...Mostly clear. Isolated showers and thunderstorms. Lows 37-47. Highs 70-80. $$ COZ290-191045- Paradox Valley Forecast Area- 1233 PM MDT Mon May 18 2026 .TONIGHT... Sky/weather.........Partly cloudy (30-40%) until 2400, then clear (0-10%). Chc of lightning....0 percent. Min temperature.....26-36 F near 6000 feet 22-32 F near 8000 feet. Max humidity........67-82% near 6000 feet 79-94% near 8000 feet. 20-foot winds.......Downslope/downvalley winds 3 to 6 mph. Localized gusts up to 20 mph in the evening. CWR.................0 percent. 15K Ft MSL Winds....Southwest 20 to 25 mph increasing to 25 to 35 mph after midnight. Mixing Height.......6000 ft AGL until 2000. 1000 ft AGL after 2100. Transport Winds.....North 5 mph. Smoke dispersal.....Fair until 2100, then poor. .TUESDAY... Sky/weather.........Mostly sunny (10-20%) until 1200, then partly cloudy (30-40%). Chc of lightning....0 percent. Max temperature.....58-68 F near 6000 feet 51-61 F near 8000 feet. Min humidity........19-29%. 20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized gusts up to 25 mph in the afternoon. CWR.................0 percent. 15K Ft MSL Winds....Southwest 20 to 30 mph. Mixing Height.......3000 ft AGL until 1100, then 10000 ft AGL. Transport Winds.....Northwest 5 mph until 1200, then southwest 10 to 15 mph. Smoke dispersal.....Poor until 0900. Very good after 1200. .TUESDAY NIGHT... Sky/weather.........Partly cloudy (30-40%). Chc of lightning....0 percent. Min temperature.....30-40 F near 6000 feet 28-38 F near 8000 feet. Max humidity........58-73% near 6000 feet 71-86% near 8000 feet. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................0 percent. 15K Ft MSL Winds....Southwest 20 to 30 mph. Mixing Height.......8000 ft AGL until 2000. 500 ft AGL after 2100. Transport Winds.....Northwest 5 to 10 mph until 2400, then northeast. Smoke dispersal.....Fair until 2100, then poor. .WEDNESDAY... Sky/weather.........Near 6000 feet, partly cloudy (40-50%) until 1200, then mostly sunny (20-30%), isolated showers and thunderstorms after 1200. Near 8000 feet, partly cloudy (40-50%), isolated showers until 1200, scattered showers and isolated thunderstorms after 1200. Chc of lightning....10 percent. Max temperature.....61-71 F near 6000 feet 53-63 F near 8000 feet. Min humidity........16-26%. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................0 percent. 15K Ft MSL Winds....Southwest 15 to 20 mph. Mixing Height.......2000 ft AGL until 1000, then 11000 ft AGL. Transport Winds.....Northwest 5 mph until 1200, then southwest 10 to 15 mph. Smoke dispersal.....Poor until 0900. Very good after 1200. .FORECAST FOR DAY 3 THROUGH 7... .THURSDAY...Mostly clear. Lows 36-46. Highs 67-77. Winds less than 15 mph. .FRIDAY...Mostly clear. Lows 38-48. Highs 68-78. Winds less than 15 mph. .SATURDAY...Mostly clear. Lows 40-50. Highs 73-83. Winds less than 15 mph. .SUNDAY...Mostly clear. Lows 43-53. Highs 76-86. .MEMORIAL DAY...Mostly clear. Isolated showers and thunderstorms near 6000 feet and scattered showers and thunderstorms near 8000 feet. Lows 46-56. Highs 78-88. $$ COZ291-191045- Northern San Juan Forecast Area- 1233 PM MDT Mon May 18 2026 .TONIGHT... Sky/weather.........Partly cloudy (30-40%). Isolated showers until 2400. Chc of lightning....0 percent. Min temperature.....23-33 F. Max humidity........71-86%. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................10 percent. 15K Ft MSL Winds....Southwest 25 to 35 mph increasing to 30 to 40 mph after midnight. Mixing Height.......6000 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....Northwest 5 to 10 mph until 2400, then southeast. Smoke dispersal.....Fair until 2100, then poor. .TUESDAY... Sky/weather.........Mostly sunny (20-30%) until 1200, then partly cloudy (40-50%). Chc of lightning....0 percent. Max temperature.....50-60 F. Min humidity........22-32%. 20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized gusts up to 30 mph. CWR.................0 percent. 15K Ft MSL Winds....Southwest 20 to 30 mph. Mixing Height.......1500 ft AGL until 0900, then 9500 ft AGL. Transport Winds.....South 5 to 10 mph until 1200, then southwest 15 to 20 mph. Smoke dispersal.....Poor until 0900. Excellent after 1200. .TUESDAY NIGHT... Sky/weather.........Partly cloudy (40-50%) until 2400, then mostly cloudy (60-70%). Isolated showers after 2400. Chc of lightning....0 percent. Min temperature.....29-39 F. Max humidity........69-84%. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................10 percent. 15K Ft MSL Winds....Southwest 20 to 30 mph. Mixing Height.......7500 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....Northwest 5 to 10 mph until 2400, then southeast. Smoke dispersal.....Good until 2100, then poor. .WEDNESDAY... Sky/weather.........Mostly cloudy (60-70%) until 1200, then partly cloudy (50-60%). Scattered showers. Isolated thunderstorms after 1200. Chc of lightning....20 percent. Max temperature.....52-62 F. Min humidity........21-31%. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................10 percent. 15K Ft MSL Winds....Southwest 20 to 25 mph. Mixing Height.......500 ft AGL until 0800. 11000 ft AGL after 0900. Transport Winds.....Southwest 5 to 10 mph. Smoke dispersal.....Poor until 0900. Very good after 1200. .FORECAST FOR DAY 3 THROUGH 7... .THURSDAY...Mostly clear. Isolated showers and thunderstorms. Lows 29-39. Highs 59-69. West winds 10 to 20 mph with gusts to 30 mph. .FRIDAY...Partly cloudy. Isolated showers. Lows 31-41. Highs 60-70. Winds less than 15 mph. .SATURDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 33-43. Highs 64-74. Winds less than 15 mph. .SUNDAY...Mostly clear. Isolated showers and thunderstorms. Lows 35-45. Highs 67-77. .MEMORIAL DAY...Partly cloudy. Scattered showers and thunderstorms. Lows 38-48. Highs 69-79. $$ COZ292-191045- North Fork Forecast Area- 1233 PM MDT Mon May 18 2026 .TONIGHT... Sky/weather.........Partly cloudy (30-40%). Near 8000 feet, isolated showers until 2400. Chc of lightning....0 percent. Min temperature.....29-39 F near 6000 feet 25-35 F near 8000 feet. Max humidity........69-84% near 6000 feet 79-94% near 8000 feet. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................0 percent. 15K Ft MSL Winds....Southwest 20 to 30 mph. Mixing Height.......5000 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....Northwest 5 mph. Smoke dispersal.....Fair until 2100, then poor. .TUESDAY... Sky/weather.........Mostly sunny (10-20%) until 1200, then partly cloudy (30-40%). Chc of lightning....0 percent. Max temperature.....57-67 F near 6000 feet 48-58 F near 8000 feet. Min humidity........24-34%. 20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized gusts up to 20 mph increasing to 30 mph in the afternoon. CWR.................0 percent. 15K Ft MSL Winds....Southwest 25 to 35 mph. Mixing Height.......2500 ft AGL until 1100, then 8500 ft AGL. Transport Winds.....South 5 mph until 1200, then west 10 to 15 mph. Smoke dispersal.....Poor until 0900. Good after 1200. .TUESDAY NIGHT... Sky/weather.........Partly cloudy (30-40%). Chc of lightning....0 percent. Min temperature.....31-41 F near 6000 feet 29-39 F near 8000 feet. Max humidity........68-83% near 6000 feet 74-89% near 8000 feet. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................0 percent. 15K Ft MSL Winds....Southwest 25 to 35 mph. Mixing Height.......6500 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....West 5 to 10 mph until 2400, then east. Smoke dispersal.....Fair until 2100, then poor. .WEDNESDAY... Sky/weather.........Partly cloudy (40-50%). Near 8000 feet, isolated showers until 1200. Scattered showers and isolated thunderstorms after 1200. Chc of lightning....20 percent. Max temperature.....61-71 F near 6000 feet 47-57 F near 8000 feet. Min humidity........19-29% near 6000 feet 27-37% near 8000 feet. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................10 percent. 15K Ft MSL Winds....Southwest 20 to 25 mph. Mixing Height.......2000 ft AGL until 1000, then 9000 ft AGL. Transport Winds.....South 5 mph until 1200, then west 10 to 15 mph. Smoke dispersal.....Poor until 0900. Very good after 1200. .FORECAST FOR DAY 3 THROUGH 7... .THURSDAY...Mostly clear. Isolated showers and thunderstorms near 8000 feet. Lows 35-45. Highs 67-77. Winds less than 15 mph. .FRIDAY...Mostly clear. Isolated showers and thunderstorms. Lows 37-47. Highs 68-78. Winds less than 15 mph. .SATURDAY...Mostly clear. Isolated showers and thunderstorms near 8000 feet. Lows 39-49. Highs 73-83. Winds less than 15 mph. .SUNDAY...Mostly clear. Isolated showers and thunderstorms near 8000 feet. Lows 42-52. Highs 77-87. .MEMORIAL DAY...Mostly clear. Isolated showers and thunderstorms near 6000 feet and scattered showers and thunderstorms near 8000 feet. Lows 45-55. Highs 79-89. $$ COZ293-191045- Gunnison Basin Forecast Area- 1233 PM MDT Mon May 18 2026 .TONIGHT... Sky/weather.........Partly cloudy (40-50%). Scattered showers until 2400. Chc of lightning....0 percent. Min temperature.....25-35 F. Max humidity........76-91%. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................10 percent. 15K Ft MSL Winds....Southwest 20 to 30 mph increasing to 25 to 35 mph after midnight. Mixing Height.......5500 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....West 5 to 10 mph until 2400, then south. Smoke dispersal.....Fair until 2100, then poor. .TUESDAY... Sky/weather.........Mostly sunny (20-30%) until 1200, then partly cloudy (40-50%). Chc of lightning....0 percent. Max temperature.....55-65 F. Min humidity........26-36%. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................0 percent. 15K Ft MSL Winds....Southwest 20 to 30 mph. Mixing Height.......1500 ft AGL until 0900. 9500 ft AGL after 1000. Transport Winds.....South 5 mph until 1200, then southwest 15 to 20 mph. Smoke dispersal.....Poor until 0900. Very good after 1200. .TUESDAY NIGHT... Sky/weather.........Partly cloudy (50-60%). Scattered showers. Isolated thunderstorms after 2400. Chc of lightning....20 percent. Min temperature.....29-39 F. Max humidity........79-94%. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................20 percent. 15K Ft MSL Winds....Southwest 20 to 30 mph. Mixing Height.......6500 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....West 5 to 10 mph until 2400, then east. Smoke dispersal.....Fair until 2100, then poor. .WEDNESDAY... Sky/weather.........Mostly cloudy (60-70%). Scattered showers and isolated thunderstorms until 1200, then numerous showers and scattered thunderstorms. Chc of lightning....50 percent. Max temperature.....54-64 F. Min humidity........28-38%. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................10 percent. 15K Ft MSL Winds....Southwest 20 to 25 mph. Mixing Height.......1500 ft AGL until 0900, then 8000 ft AGL. Transport Winds.....South 5 to 10 mph until 1200, then west. Smoke dispersal.....Poor until 0900. Good after 1200. .FORECAST FOR DAY 3 THROUGH 7... .THURSDAY...Mostly clear. Isolated showers and thunderstorms. Lows 27-37. Highs 58-68. West winds 10 to 20 mph with gusts to 30 mph. .FRIDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 29-39. Highs 59-69. West winds 10 to 20 mph with gusts to 35 mph. .SATURDAY...Mostly clear. Isolated showers and thunderstorms. Lows 30-40. Highs 63-73. West winds 10 to 20 mph with gusts to 30 mph. .SUNDAY...Mostly clear. Isolated showers and thunderstorms. Lows 32-42. Highs 68-78. .MEMORIAL DAY...Mostly clear. Scattered showers and thunderstorms. Lows 35-45. Highs 70-80. $$ COZ207-191045- Southwest Colorado Lower Forecast Area- 1233 PM MDT Mon May 18 2026 .TONIGHT... Sky/weather.........Partly cloudy (30-40%). Chc of lightning....0 percent. Min temperature.....33-43 F. Max humidity........60-75%. 20-foot winds.......Downslope/downvalley winds 3 to 6 mph. Localized gusts up to 30 mph. CWR.................0 percent. 15K Ft MSL Winds....Southwest 30 to 40 mph. Mixing Height.......8000 ft AGL until 2000. 500 ft AGL after 2200. Transport Winds.....Northwest 10 to 15 mph until 2400, then northeast. Smoke dispersal.....Good until 2100, then poor. .TUESDAY... Sky/weather.........Mostly sunny (20-30%). Chc of lightning....0 percent. Max temperature.....64-74 F. Min humidity........13-23%. 20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized gusts up to 30 mph. CWR.................0 percent. 15K Ft MSL Winds....Southwest 25 to 35 mph. Mixing Height.......1000 ft AGL until 0900, then 10000 ft AGL. Transport Winds.....East 5 mph until 1200, then southwest 10 to 15 mph. Smoke dispersal.....Poor until 0900. Very good after 1200. .TUESDAY NIGHT... Sky/weather.........Partly cloudy (40-50%). Chc of lightning....0 percent. Min temperature.....36-46 F. Max humidity........57-72%. 20-foot winds.......Downslope/downvalley winds 3 to 6 mph. Localized gusts up to 30 mph. CWR.................0 percent. 15K Ft MSL Winds....Southwest 25 to 35 mph. Mixing Height.......8000 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....Northwest 5 to 10 mph until 2400, then northeast. Smoke dispersal.....Fair until 2100, then poor. .WEDNESDAY... Sky/weather.........Mostly cloudy (60-70%) until 1200, then mostly sunny (20-30%). Chc of lightning....0 percent. Max temperature.....66-76 F. Min humidity........11-16%. 20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized gusts up to 25 mph. CWR.................0 percent. 15K Ft MSL Winds....Southwest 15 to 20 mph. Mixing Height.......1000 ft AGL until 0900. 12000 ft AGL after 1000. Transport Winds.....East 5 mph until 1200, then southwest 10 to 15 mph. Smoke dispersal.....Poor until 0900. Very good after 1200. .FORECAST FOR DAY 3 THROUGH 7... .THURSDAY...Mostly clear. Lows 35-45. Highs 71-81. West winds 10 to 20 mph with gusts to 30 mph. .FRIDAY...Mostly clear. Lows 37-47. Highs 72-82. West winds 10 to 20 mph with gusts to 30 mph. .SATURDAY...Mostly clear. Lows 39-49. Highs 76-86. Winds less than 15 mph. .SUNDAY...Clear. Lows 41-51. Highs 79-89. .MEMORIAL DAY...Mostly clear. Isolated showers and thunderstorms. Lows 43-53. Highs 79-89. $$ COZ294-191045- Southwest Colorado Upper West Forecast Area- 1233 PM MDT Mon May 18 2026 .TONIGHT... Sky/weather.........Mostly clear (20-30%). Chc of lightning....0 percent. Min temperature.....24-34 F. Max humidity........66-81%. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................0 percent. 15K Ft MSL Winds....Southwest 25 to 35 mph. Mixing Height.......5500 ft AGL until 2100, then 1000 ft AGL. Transport Winds.....Northwest 5 to 10 mph until 2400, then northeast. Smoke dispersal.....Fair until 2100, then poor. .TUESDAY... Sky/weather.........Mostly sunny (20-30%). Chc of lightning....0 percent. Max temperature.....51-61 F. Min humidity........18-28%. 20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming southwest 10 to 15 mph in the afternoon. Localized gusts up to 35 mph. CWR.................0 percent. 15K Ft MSL Winds....Southwest 20 to 30 mph. Mixing Height.......500 ft AGL until 0800. 9000 ft AGL after 0900. Transport Winds.....Southeast 5 to 10 mph until 1200, then southwest 15 to 20 mph. Smoke dispersal.....Poor until 0900. Very good after 1200. .TUESDAY NIGHT... Sky/weather.........Partly cloudy (30-40%) until 2400, then mostly cloudy (60-70%). Chc of lightning....0 percent. Min temperature.....29-39 F. Max humidity........60-75%. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................0 percent. 15K Ft MSL Winds....Southwest 20 to 30 mph. Mixing Height.......7500 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....Northwest 5 to 10 mph until 2400, then northeast. Smoke dispersal.....Fair until 2100, then poor. .WEDNESDAY... Sky/weather.........Mostly cloudy (60-70%) until 1200, then partly cloudy (30-40%). Isolated showers. Isolated thunderstorms after 1200. Chc of lightning....10 percent. Max temperature.....53-63 F. Min humidity........15-25%. 20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized gusts up to 30 mph. CWR.................10 percent. 15K Ft MSL Winds....Southwest 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Mixing Height.......500 ft AGL until 0800. 11500 ft AGL after 0900. Transport Winds.....South 5 to 10 mph until 1200, then southwest. Smoke dispersal.....Poor until 0900. Excellent after 1200. .FORECAST FOR DAY 3 THROUGH 7... .THURSDAY...Mostly clear. Lows 30-40. Highs 59-69. Southwest winds 10 to 20 mph with gusts to 30 mph. .FRIDAY...Mostly clear. Lows 32-42. Highs 60-70. Winds less than 15 mph. .SATURDAY...Mostly clear. Lows 34-44. Highs 64-74. Winds less than 15 mph. .SUNDAY...Mostly clear. Lows 36-46. Highs 67-77. .MEMORIAL DAY...Mostly clear. Scattered showers and thunderstorms. Lows 39-49. Highs 67-77. $$ COZ295-191045- Southwest Colorado Upper East Forecast Area- 1233 PM MDT Mon May 18 2026 .TONIGHT... Sky/weather.........Mostly clear (10-20%). Chc of lightning....0 percent. Min temperature.....29-39 F. Max humidity........53-63%. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................0 percent. 15K Ft MSL Winds....Southwest 35 to 45 mph decreasing to 30 to 40 mph after midnight. Mixing Height.......6500 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....West 5 to 10 mph until 2400, then northeast. Smoke dispersal.....Good until 2100, then poor. .TUESDAY... Sky/weather.........Sunny (0-10%) until 1200, then partly cloudy (30-40%). Isolated showers and thunderstorms after 1200. Chc of lightning....0 percent. Max temperature.....59-69 F. Min humidity........20-30%. 20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming southwest 10 to 15 mph in the afternoon. Localized gusts up to 30 mph. CWR.................10 percent. 15K Ft MSL Winds....Southwest 25 to 35 mph. Mixing Height.......500 ft AGL until 0800. 10000 ft AGL after 0900. Transport Winds.....South 5 to 10 mph until 1200, then southwest 20 to 25 mph. Smoke dispersal.....Poor until 0900. Excellent after 1200. .TUESDAY NIGHT... Sky/weather.........Mostly cloudy (70-80%). Isolated thunderstorms until 2400. Isolated showers. Chc of lightning....10 percent. Min temperature.....35-45 F. Max humidity........65-80%. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................10 percent. 15K Ft MSL Winds....Southwest 25 to 35 mph. Mixing Height.......7500 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....Southwest 5 to 10 mph until 2400, then east. Smoke dispersal.....Good until 2100, then poor. .WEDNESDAY... Sky/weather.........Mostly cloudy (70-80%) until 1200, then partly cloudy (50-60%). Isolated showers. Isolated thunderstorms after 1200. Chc of lightning....20 percent. Max temperature.....60-70 F. Min humidity........15-25%. 20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming southwest 10 to 15 mph in the afternoon. Localized gusts up to 30 mph. CWR.................10 percent. 15K Ft MSL Winds....Southwest 20 to 30 mph decreasing to 20 to 25 mph in the afternoon. Mixing Height.......1500 ft AGL until 0900, then 12000 ft AGL. Transport Winds.....South 5 to 10 mph until 1200, then southwest 15 to 20 mph. Smoke dispersal.....Poor until 0900. Excellent after 1200. .FORECAST FOR DAY 3 THROUGH 7... .THURSDAY...Mostly clear. Isolated showers and thunderstorms. Lows 30-40. Highs 61-71. Southwest winds 10 to 20 mph with gusts to 30 mph. .FRIDAY...Mostly clear. Lows 31-41. Highs 63-73. Winds less than 15 mph. .SATURDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 33-43. Highs 65-75. Winds less than 15 mph. .SUNDAY...Mostly clear. Isolated showers and thunderstorms. Lows 34-44. Highs 68-78. .MEMORIAL DAY...Partly cloudy. Scattered showers and thunderstorms. Lows 37-47. Highs 68-78. $$ UTZ485-191045- Eastern Ashley National Forest- 1233 PM MDT Mon May 18 2026 .TONIGHT... Sky/weather.........Near 7000 feet, partly cloudy (50-60%). Near 10000 feet, mostly cloudy (60-70%) until 2400, then partly cloudy (30-40%). Chc of lightning....0 percent. Min temperature.....15-25 F near 7000 feet 6-16 F near 10000 feet. 24 hr trend......8 degrees cooler. Max humidity........78-93%. 24 hr trend......20% drier. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................0 percent. Mixing Height.......2500 ft AGL until 2100, then 500 ft AGL. Transport Winds.....Northeast 5 mph. Clearing Index......500 until 2000, then less than 500. .TUESDAY... Sky/weather.........Partly cloudy (30-40%). Near 7000 feet, isolated showers and thunderstorms after 1200. near 10000 feet, scattered snow showers and isolated thunderstorms after 1200. Chc of lightning....10 percent. Max temperature.....37-47 F near 7000 feet 30-40 F near 10000 feet. 24 hr trend......12 degrees warmer. Min humidity........49-59%. 24 hr trend......16% drier. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................10 percent. Mixing Height.......6500 ft AGL. Transport Winds.....North 5 mph. Clearing Index......500. .TUESDAY NIGHT... Sky/weather.........Near 7000 feet, partly cloudy (40-50%), isolated showers until 2400. Near 10000 feet, mostly cloudy (60-70%) until 2400, then mostly clear (10-20%). Chc of lightning....0 percent. Min temperature.....20-30 F near 7000 feet 11-21 F near 10000 feet. 24 hr trend......5 degrees warmer. Max humidity........62-77%. 24 hr trend......5% drier. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................10 percent. Mixing Height.......5500 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....Northwest 5 mph. Clearing Index......Less than 500. .WEDNESDAY... Sky/weather.........Near 7000 feet, mostly sunny (20-30%). Near 10000 feet, mostly sunny (20-30%) until 1200, then partly cloudy (30-40%), isolated thunderstorms after 1200. Chc of lightning....0 percent. Max temperature.....46-56 F near 7000 feet 39-49 F near 10000 feet. 24 hr trend......7 degrees warmer. Min humidity........33-43%. 24 hr trend......19% drier. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................0 percent. Mixing Height.......1000 ft AGL until 0900, then 7000 ft AGL. Transport Winds.....West 5 mph. Clearing Index......700. .FORECAST FOR DAY 3 THROUGH 7... .THURSDAY...Partly cloudy. Numerous showers and scattered thunderstorms near 7000 feet and scattered thunderstorms near 10000 feet. Lows 30-40. Highs 52-62. Winds less than 15 mph. .FRIDAY...Partly cloudy. Scattered showers and isolated thunderstorms near 7000 feet and scattered showers and isolated thunderstorms near 10000 feet. Lows 31-41. Highs 54-64. Winds less than 15 mph. .SATURDAY...Partly cloudy. Isolated showers and thunderstorms . Lows 34-44. Highs 61-71. Winds less than 15 mph. .SUNDAY...Mostly clear. Isolated showers and thunderstorms . Lows 38-48. Highs 67-77. .MEMORIAL DAY...Mostly clear. Isolated showers near 7000 feet and isolated showers and thunderstorms near 10000 feet. Lows 43-53. Highs 70-80. $$ UTZ486-191045- Eastern Uinta Basin- 1233 PM MDT Mon May 18 2026 .TONIGHT... Sky/weather.........Partly cloudy (30-40%). Chc of lightning....0 percent. Min temperature.....21-31 F near 5000 feet 13-23 F near 8000 feet. 24 hr trend......9 degrees cooler. Max humidity........72-87% near 5000 feet 87-100% near 8000 feet. 24 hr trend......14% drier. 20-foot winds.......Downslope/downvalley winds 3 to 6 mph. Localized gusts up to 25 mph in the evening. CWR.................0 percent. Mixing Height.......4000 ft AGL until 2100, then 1000 ft AGL. Transport Winds.....Northeast 10 to 15 mph until 2400, then north 5 mph. Clearing Index......700 until 2000. Less than 500 after 2100. .TUESDAY... Sky/weather.........Mostly sunny (10-20%). Near 5000 feet, isolated showers after 1200. Near 8000 feet, isolated thunderstorms after 1200. Chc of lightning....0 percent. Max temperature.....46-56 F near 5000 feet 34-44 F near 8000 feet. 24 hr trend......11 degrees warmer. Min humidity........36-46% near 5000 feet 50-60% near 8000 feet. 24 hr trend......12% drier. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................0 percent. Mixing Height.......7500 ft AGL. Transport Winds.....Northeast 5 mph. Clearing Index......600. .TUESDAY NIGHT... Sky/weather.........Mostly clear (20-30%). Chc of lightning....0 percent. Min temperature.....25-35 F near 5000 feet 19-29 F near 8000 feet. 24 hr trend......5 degrees warmer. Max humidity........56-71% near 5000 feet 64-79% near 8000 feet. 24 hr trend......13% drier. 20-foot winds.......Downslope/downvalley winds 3 to 6 mph. Localized gusts up to 20 mph in the evening. CWR.................0 percent. Mixing Height.......7000 ft AGL until 2000. 500 ft AGL after 2100. Transport Winds.....North 5 mph. Clearing Index......500 until 2000, then less than 500. .WEDNESDAY... Sky/weather.........Mostly sunny (20-30%). Chc of lightning....0 percent. Max temperature.....53-63 F near 5000 feet 39-49 F near 8000 feet. 24 hr trend......9 degrees warmer. Min humidity........25-35% near 5000 feet 32-42% near 8000 feet. 24 hr trend......9% drier. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................0 percent. Mixing Height.......3000 ft AGL until 1100, then 7500 ft AGL. Transport Winds.....Northwest 5 mph until 1200, then southwest. Clearing Index......700. .FORECAST FOR DAY 3 THROUGH 7... .THURSDAY...Partly cloudy. Scattered showers and thunderstorms . Lows 34-44. Highs 58-68. Winds less than 15 mph. .FRIDAY...Partly cloudy. Isolated showers and thunderstorms near 6000 feet and scattered showers and isolated thunderstorms near 8000 feet. Lows 35-45. Highs 59-69. Winds less than 15 mph. .SATURDAY...Mostly clear. Isolated showers and thunderstorms . Lows 38-48. Highs 66-76. Winds less than 15 mph. .SUNDAY...Mostly clear. Isolated showers near 8000 feet. Lows 42-52. Highs 72-82. .MEMORIAL DAY...Mostly clear. Lows 45-55. Highs 75-85. $$ UTZ487-191045- Book Cliffs- 1233 PM MDT Mon May 18 2026 .TONIGHT... Sky/weather.........Partly cloudy (30-40%). Chc of lightning....0 percent. Min temperature.....26-36 F near 5000 feet 18-28 F near 8000 feet. 24 hr trend......5 degrees cooler. Max humidity........76-91% near 5000 feet 87-100% near 8000 feet. 24 hr trend......14% drier. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................0 percent. Mixing Height.......5000 ft AGL until 2000. 1000 ft AGL after 2100. Transport Winds.....Northeast 5 to 10 mph. Clearing Index......600 until 2000. Less than 500 after 2100. .TUESDAY... Sky/weather.........Near 5000 feet, partly cloudy (30-40%) until 1200, then mostly sunny (20-30%). Near 8000 feet, partly cloudy (30-40%). Chc of lightning....0 percent. Max temperature.....51-61 F near 5000 feet 41-51 F near 8000 feet. 24 hr trend......10 degrees warmer. Min humidity........32-42%. 24 hr trend......15% drier. 20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized gusts up to 20 mph in the morning. CWR.................0 percent. Mixing Height.......7500 ft AGL. Transport Winds.....Northeast 5 mph until 1200, then northwest. Clearing Index......600. .TUESDAY NIGHT... Sky/weather.........Mostly clear (10-20%). Chc of lightning....0 percent. Min temperature.....31-41 F near 5000 feet 24-34 F near 8000 feet. 24 hr trend......5 degrees warmer. Max humidity........63-78%. 24 hr trend......13% drier. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................0 percent. Mixing Height.......6500 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....Northeast 5 mph. Clearing Index......550 until 2000, then less than 500. .WEDNESDAY... Sky/weather.........Mostly sunny (10-20%). Chc of lightning....0 percent. Max temperature.....59-69 F near 5000 feet 49-59 F near 8000 feet. 24 hr trend......7 degrees warmer. Min humidity........19-29%. 24 hr trend......14% drier. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................0 percent. Mixing Height.......2000 ft AGL until 1000, then 9000 ft AGL. Transport Winds.....Northwest 5 mph. Clearing Index......750. .FORECAST FOR DAY 3 THROUGH 7... .THURSDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 34-44. Highs 63-73. Winds less than 15 mph. .FRIDAY...Partly cloudy. Isolated showers and thunderstorms near 6000 feet and isolated showers near 8000 feet. Lows 35-45. Highs 63-73. Winds less than 15 mph. .SATURDAY...Mostly clear. Lows 38-48. Highs 69-79. Winds less than 15 mph. .SUNDAY...Mostly clear. Lows 42-52. Highs 75-85. .MEMORIAL DAY...Mostly clear. Lows 46-56. Highs 77-87. $$ UTZ490-191045- Colorado River Basin- 1233 PM MDT Mon May 18 2026 .TONIGHT... Sky/weather.........Partly cloudy (30-40%). Chc of lightning....0 percent. Min temperature.....29-39 F. 24 hr trend......7 degrees cooler. Max humidity........64-79%. 24 hr trend......23% drier. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................0 percent. Mixing Height.......5000 ft AGL until 2100, then 1000 ft AGL. Transport Winds.....Northeast 5 to 10 mph. Clearing Index......500 until 2100, then less than 500. .TUESDAY... Sky/weather.........Mostly sunny (20-30%). Chc of lightning....0 percent. Max temperature.....59-69 F near 5000 feet 46-56 F near 7000 feet. 24 hr trend......8 degrees warmer. Min humidity........20-30% near 5000 feet 26-36% near 7000 feet. 24 hr trend......19% drier. 20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized gusts up to 20 mph in the morning. CWR.................0 percent. Mixing Height.......2500 ft AGL until 1000, then 8500 ft AGL. Transport Winds.....North 5 to 10 mph until 1200, then west. Clearing Index......Less than 500 until 0900, then 800. .TUESDAY NIGHT... Sky/weather.........Mostly clear (20-30%). Chc of lightning....0 percent. Min temperature.....34-44 F. 24 hr trend......6 degrees warmer. Max humidity........57-67% near 5000 feet 51-61% near 7000 feet. 24 hr trend......15% drier. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................0 percent. Mixing Height.......5000 ft AGL until 2100, then 500 ft AGL. Transport Winds.....Northwest 5 to 10 mph until 2400, then northeast. Clearing Index......700 until 2000. Less than 500 after 2100. .WEDNESDAY... Sky/weather.........Mostly sunny (20-30%). Chc of lightning....0 percent. Max temperature.....65-75 F near 5000 feet 52-62 F near 7000 feet. 24 hr trend......8 degrees warmer. Min humidity........11-21%. 24 hr trend......8% drier. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................0 percent. Mixing Height.......1000 ft AGL until 0900, then 9500 ft AGL. Transport Winds.....North 5 mph until 1200, then west. Clearing Index......Less than 500 until 1200. 1050 after 1400. .FORECAST FOR DAY 3 THROUGH 7... .THURSDAY...Mostly clear. Lows 39-49. Highs 72-82. Winds less than 15 mph. .FRIDAY...Mostly clear. Lows 41-51. Highs 71-81. Winds less than 15 mph. .SATURDAY...Mostly clear. Lows 44-54. Highs 77-87. Winds less than 15 mph. .SUNDAY...Mostly clear. Lows 48-58. Highs 82-92. .MEMORIAL DAY...Mostly clear. Isolated showers and thunderstorms. Lows 51-61. Highs 83-93. $$ UTZ491-191045- Southeast Utah- 1233 PM MDT Mon May 18 2026 .TONIGHT... Sky/weather.........Mostly clear (20-30%). Chc of lightning....0 percent. Min temperature.....36-46 F near 5000 feet 24-34 F near 8000 feet. 24 hr trend......9 degrees cooler. Max humidity........56-71% near 5000 feet 72-87% near 8000 feet. 24 hr trend......17% drier. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................0 percent. Mixing Height.......9000 ft AGL until 2000. 1000 ft AGL after 2100. Transport Winds.....North 5 to 10 mph. Clearing Index......1050 until 2000. Less than 500 after 2100. .TUESDAY... Sky/weather.........Near 5000 feet, mostly sunny (20-30%). Near 8000 feet, mostly sunny (20-30%) until 1200, then partly cloudy (30-40%). Chc of lightning....0 percent. Max temperature.....66-76 F near 5000 feet 47-57 F near 8000 feet. 24 hr trend......6 degrees warmer. Min humidity........14-24% near 5000 feet 28-38% near 8000 feet. 24 hr trend......1% drier. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................0 percent. Mixing Height.......2500 ft AGL until 1000, then 9500 ft AGL. Transport Winds.....North 5 to 10 mph until 1200, then west. Clearing Index......Less than 500 until 1000. 1050 after 1400. .TUESDAY NIGHT... Sky/weather.........Partly cloudy (30-40%). Chc of lightning....0 percent. Min temperature.....38-48 F near 5000 feet 29-39 F near 8000 feet. 24 hr trend......3 degrees warmer. Max humidity........49-59%. 24 hr trend......13% drier. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................0 percent. Mixing Height.......8500 ft AGL until 2000. 500 ft AGL after 2100. Transport Winds.....North 5 to 10 mph. Clearing Index......950 until 2000. Less than 500 after 2100. .WEDNESDAY... Sky/weather.........Partly cloudy (40-50%) until 1200, then mostly sunny (10-20%). Near 8000 feet, isolated showers after 1200. Chc of lightning....0 percent. Max temperature.....69-79 F near 5000 feet 50-60 F near 8000 feet. 24 hr trend......3 degrees warmer. Min humidity........11-16% near 5000 feet 20-30% near 8000 feet. 24 hr trend......4% drier. 20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized gusts up to 25 mph in the afternoon. CWR.................0 percent. Mixing Height.......2000 ft AGL until 1000, then 12000 ft AGL. Transport Winds.....Northwest 5 mph until 1200, then west. Clearing Index......Less than 500 until 1000. 1050 after 1200. .FORECAST FOR DAY 3 THROUGH 7... .THURSDAY...Mostly clear. Lows 39-49. Highs 74-84. Winds less than 15 mph. .FRIDAY...Mostly clear. Lows 42-52. Highs 75-85. Winds less than 15 mph. .SATURDAY...Mostly clear. Lows 43-53. Highs 78-88. Winds less than 15 mph. .SUNDAY...Mostly clear. Lows 46-56. Highs 81-91. .MEMORIAL DAY...Mostly clear. Isolated showers and thunderstorms . Lows 48-58. Highs 81-91. $$