Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Grand Junction, CO
Issued by NWS Grand Junction, CO
527
FNUS55 KGJT 182028
FWFGJT
Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
228 PM MDT Mon Aug 18 2025
.DISCUSSION...
High pressure continues to build in and will keep hot and dry
conditions across the region. A few stronger wind gusts are
possible this afternoon but widespread windy conditions are not
expected thus keeping critical fire weather concerns lower than
seen recently. Generally light winds are expected for the rest of
the week. Moisture will slowly start increasing Wednesday onwards
as will precip chances especially heading into the weekend.
...GUSTY ERRATIC WINDS CAN BE EXPECTED NEAR ANY SHOWERS
OR THUNDERSTORMS...
...THE SMOKE DATA IS CALCULATED FROM AN AVERAGE AT 6000 FEET MSL...
COZ200-191230-
Little Snake Forecast Area-
228 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Clear (0-10%).
Chc of lightning....0 percent.
Min temperature.....55-65 F.
Max humidity........24-34%.
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 10 to 15 mph.
Mixing Height.......10500 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....West 5 mph.
Smoke dispersal.....Fair until 2100, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny (10-20%).
Chc of lightning....0 percent.
Max temperature.....85-95 F near 6000 feet
75-85 F near 8000 feet.
Min humidity........3-8%.
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 5 to 10 mph.
Mixing Height.......3000 ft AGL until 1100, then 14500 ft AGL.
Transport Winds.....East 5 mph until 1200, then west.
Smoke dispersal.....Poor until 1200, then good.
.TUESDAY NIGHT...
Sky/weather.........Clear (0-10%).
Chc of lightning....0 percent.
Min temperature.....56-66 F.
Max humidity........24-34%.
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....West 5 to 10 mph.
Mixing Height.......13000 ft AGL until 1900. 2000 ft AGL after
2000.
Transport Winds.....East 5 mph.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Sunny (0-10%).
Chc of lightning....0 percent.
Max temperature.....88-98 F near 6000 feet
77-87 F near 8000 feet.
Min humidity........4-9%.
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 5 to 10 mph shifting to the southwest 5
mph in the afternoon.
Mixing Height.......2000 ft AGL until 1000. 15500 ft AGL after
1200.
Transport Winds.....Southeast 5 mph until 1200, then southwest.
Smoke dispersal.....Poor until 0900. Very good after 1500.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Isolated showers and thunderstorms.
Lows 54-64. Highs 89-99. Winds less than 15 mph.
.FRIDAY...Partly cloudy. Isolated showers and thunderstorms. Lows
54-64. Highs 87-97. Winds less than 15 mph.
.SATURDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 54-64. Highs 86-96. Winds less than 15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 54-64. Highs 81-91.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 52-62. Highs 79-89.
$$
COZ201-191230-
Routt Forecast Area-
228 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (20-30%).
Chc of lightning....0 percent.
Min temperature.....49-59 F.
Max humidity........33-43%.
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....West 5 to 10 mph.
Mixing Height.......12000 ft AGL until 1900. 1500 ft AGL after
2000.
Transport Winds.....Northwest 5 mph until 2400, then southeast.
Smoke dispersal.....Fair until 2100, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny (10-20%).
Chc of lightning....0 percent.
Max temperature.....76-86 F.
Min humidity........7-12%.
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 5 mph.
Mixing Height.......2500 ft AGL until 1000, then 13500 ft AGL.
Transport Winds.....South 5 mph until 1200, then west.
Smoke dispersal.....Poor until 0900. Good after 1200.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (10-20%).
Chc of lightning....0 percent.
Min temperature.....50-60 F.
Max humidity........46-56%.
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....Northwest 5 to 10 mph.
Mixing Height.......12500 ft AGL until 1900. 1500 ft AGL after
2000.
Transport Winds.....Northeast 5 to 10 mph until 2400, then
southeast.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny (10-20%).
Chc of lightning....0 percent.
Max temperature.....78-88 F.
Min humidity........9-14%.
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....Northwest 5 to 10 mph.
Mixing Height.......2500 ft AGL until 1000, then 15000 ft AGL.
Transport Winds.....South 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 0900. Very good after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Isolated showers and thunderstorms.
Lows 50-60. Highs 80-90. Winds less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 50-60. Highs 77-87. Winds less than 15 mph.
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 49-59. Highs 75-85. Winds less than 15 mph.
.SUNDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms. Lows 49-59. Highs 70-80.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 47-57. Highs 68-78.
$$
COZ202-191230-
White River Forecast Area-
228 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Clear (0-10%).
Chc of lightning....0 percent.
Min temperature.....53-63 F.
Max humidity........22-32% near 6000 feet
16-26% 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 5 to 10 mph.
Mixing Height.......11500 ft AGL until 2000, then 1000 ft AGL.
Transport Winds.....West 5 mph until 2400, then southeast.
Smoke dispersal.....Fair until 2100, then poor.
.TUESDAY...
Sky/weather.........Sunny (0-10%).
Chc of lightning....0 percent.
Max temperature.....85-95 F near 6000 feet
76-86 F near 8000 feet.
Min humidity........4-9%.
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 5 mph.
Mixing Height.......2500 ft AGL until 1100. 13500 ft AGL after
1200.
Transport Winds.....East 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 1200, then fair.
.TUESDAY NIGHT...
Sky/weather.........Clear (0-10%).
Chc of lightning....0 percent.
Min temperature.....53-63 F.
Max humidity........22-32%.
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 5 to 10 mph.
Mixing Height.......12500 ft AGL until 1900. 1000 ft AGL after
2000.
Transport Winds.....North 5 mph until 2400, then southeast.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny (10-20%).
Chc of lightning....0 percent.
Max temperature.....87-97 F near 6000 feet
77-87 F near 8000 feet.
Min humidity........4-9%.
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 5 to 10 mph.
Mixing Height.......1500 ft AGL until 1000. 15000 ft AGL after
1100.
Transport Winds.....South 5 mph until 1200, then west.
Smoke dispersal.....Poor until 0900. Very good after 1500.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Isolated showers and thunderstorms.
Lows 54-64. Highs 90-100. Winds less than 15 mph.
.FRIDAY...Partly cloudy. Isolated showers and thunderstorms near
6000 feet and scattered showers and thunderstorms near 8000 feet.
Lows 55-65. Highs 88-98. Winds less than 15 mph.
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 55-65. Highs 86-96. Winds less than 15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms near
6000 feet and numerous showers and scattered thunderstorms near
8000 feet. Lows 55-65. Highs 82-92.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms near
6000 feet and numerous showers and scattered thunderstorms near
8000 feet. Lows 52-62. Highs 80-90.
$$
COZ203-191230-
Lower Colorado River-
228 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Clear (0-10%).
Chc of lightning....0 percent.
Min temperature.....57-67 F.
Max humidity........19-29%.
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 5 to 10 mph.
Mixing Height.......11500 ft AGL until 1900. 2000 ft AGL after
2000.
Transport Winds.....West 5 to 10 mph until 2400, then east.
Smoke dispersal.....Fair until 2100, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny (10-20%).
Chc of lightning....0 percent.
Max temperature.....87-97 F near 6000 feet
79-89 F near 8000 feet.
Min humidity........4-9%.
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 5 to 10 mph shifting to the north in the
afternoon.
Mixing Height.......3500 ft AGL until 1100, then 14500 ft AGL.
Transport Winds.....East 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 1200, then fair.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (10-20%).
Chc of lightning....0 percent.
Min temperature.....58-68 F.
Max humidity........26-36%.
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....East 5 to 10 mph shifting to the west after
midnight.
Mixing Height.......13500 ft AGL until 1900. 2000 ft AGL after
2000.
Transport Winds.....North 5 mph until 2400, then east.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny (20-30%). Isolated showers and
thunderstorms after 1200.
Chc of lightning....10 percent.
Max temperature.....88-98 F near 6000 feet
80-90 F near 8000 feet.
Min humidity........7-12%.
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized
gusts up to 20 mph.
CWR.................10 percent.
15K Ft MSL Winds....Northwest 5 to 10 mph.
Mixing Height.......2500 ft AGL until 1000. 14500 ft AGL after
1200.
Transport Winds.....Southeast 5 mph until 1200, then west.
Smoke dispersal.....Poor until 0900. Good after 1500.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Isolated showers and thunderstorms.
Lows 60-70. Highs 91-101. Winds less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 61-71. Highs 90-100. Winds less than 15 mph.
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 61-71. Highs 86-96. Winds less than 15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 59-69. Highs 82-92.
.MONDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms. Lows 58-68. Highs 80-90.
$$
COZ205-191230-
Colorado River Headwaters-
228 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (10-20%).
Chc of lightning....0 percent.
Min temperature.....51-61 F.
Max humidity........40-50%.
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....West 5 to 10 mph.
Mixing Height.......12500 ft AGL until 1900. 2000 ft AGL after
2000.
Transport Winds.....West 5 to 10 mph until 2400, then southeast.
Smoke dispersal.....Fair until 2100, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny (20-30%).
Chc of lightning....0 percent.
Max temperature.....79-89 F.
Min humidity........7-12%.
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 5 to 10 mph.
Mixing Height.......3000 ft AGL until 1000. 13500 ft AGL after
1100.
Transport Winds.....South 5 mph until 1200, then west.
Smoke dispersal.....Poor until 0900. Good after 1200.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (10-20%).
Chc of lightning....0 percent.
Min temperature.....52-62 F.
Max humidity........51-61%.
20-foot winds.......Downslope/downvalley winds 3 to 6 mph.
Localized gusts up to 20 mph.
CWR.................0 percent.
15K Ft MSL Winds....Northwest 5 to 10 mph.
Mixing Height.......12000 ft AGL until 1900. 2000 ft AGL after
2000.
Transport Winds.....Northeast 5 to 10 mph until 2400, then
southeast.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny (20-30%). Isolated showers and
thunderstorms after 1200.
Chc of lightning....10 percent.
Max temperature.....82-92 F.
Min humidity........9-14%.
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....North 5 to 10 mph.
Mixing Height.......3000 ft AGL until 1000. 14500 ft AGL after
1200.
Transport Winds.....Southwest 5 mph until 1200, then north.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Isolated showers and thunderstorms.
Lows 50-60. Highs 82-92. Winds less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 51-61. Highs 79-89. Winds less than 15 mph.
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 49-59. Highs 76-86. Winds less than 15 mph.
.SUNDAY...Mostly cloudy. Numerous showers and thunderstorms. Lows
48-58. Highs 71-81.
.MONDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms. Lows 47-57. Highs 70-80.
$$
COZ290-191230-
Paradox Valley Forecast Area-
228 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Clear (0-10%).
Chc of lightning....0 percent.
Min temperature.....54-64 F near 6000 feet
51-61 F near 8000 feet.
Max humidity........19-29% near 6000 feet
31-41% 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 5 to 10 mph.
Mixing Height.......11000 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....North 5 to 10 mph until 2400, then east.
Smoke dispersal.....Fair until 2100, then poor.
.TUESDAY...
Sky/weather.........Sunny (0-10%). Near 8000 feet, isolated.
Chc of lightning....0 percent.
Max temperature.....87-97 F near 6000 feet
76-86 F near 8000 feet.
Min humidity........3-8%.
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 5 to 10 mph shifting to the north in the
afternoon.
Mixing Height.......2000 ft AGL until 1000. 14500 ft AGL after
1100.
Transport Winds.....Southeast 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 1200. Good after 1500.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (10-20%).
Chc of lightning....0 percent.
Min temperature.....56-66 F near 6000 feet
52-62 F near 8000 feet.
Max humidity........27-37% near 6000 feet
47-57% 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....Southeast 5 to 10 mph shifting to the west
after midnight.
Mixing Height.......14000 ft AGL until 1900. 1500 ft AGL after
2000.
Transport Winds.....North 5 to 10 mph until 2400, then southeast.
Smoke dispersal.....Fair until 2100, then poor.
.WEDNESDAY...
Sky/weather.........Sunny (0-10%) until 1200, then partly cloudy
(40-50%). Near 6000 feet, scattered showers and
isolated thunderstorms after 1200. Near 8000
feet, scattered showers and thunderstorms after
1200.
Chc of lightning....20 percent.
Max temperature.....87-97 F near 6000 feet
75-85 F near 8000 feet.
Min humidity........9-14%.
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....North 5 to 10 mph.
Mixing Height.......2500 ft AGL until 1000. 14000 ft AGL after
1200.
Transport Winds.....South 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 0900. Good after 1500.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Isolated showers and thunderstorms near
6000 feet and scattered showers and thunderstorms near 8000 feet.
Lows 60-70. Highs 92-102. Winds less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 61-71. Highs 91-101. Winds less than 15 mph.
.SATURDAY...Partly cloudy near 6000 feet and mostly cloudy near
8000 feet and scattered showers and thunderstorms near 6000 feet
and numerous showers and scattered thunderstorms near 8000 feet.
Lows 61-71. Highs 87-97. Winds less than 15 mph.
.SUNDAY...Mostly cloudy. Numerous thunderstorms and scattered
showers near 6000 feet and numerous thunderstorms and scattered
showers near 8000 feet. Lows 60-70. Highs 83-93.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 58-68. Highs 82-92.
$$
COZ291-191230-
Northern San Juan Forecast Area-
228 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (10-20%).
Chc of lightning....0 percent.
Min temperature.....49-59 F.
Max humidity........35-45%.
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....Northwest 5 to 10 mph shifting to the south
after midnight.
Mixing Height.......11500 ft AGL until 1900. 2000 ft AGL after
2000.
Transport Winds.....North 5 mph until 2400, then southeast.
Smoke dispersal.....Fair until 2100, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny (10-20%). Isolated.
Chc of lightning....0 percent.
Max temperature.....75-85 F.
Min humidity........7-12%.
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 5 to 10 mph.
Mixing Height.......2000 ft AGL until 0900. 14000 ft AGL after
1000.
Transport Winds.....Southwest 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 0900. Good after 1500.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (10-20%).
Chc of lightning....0 percent.
Min temperature.....51-61 F.
Max humidity........51-61%.
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....Northwest 5 to 10 mph.
Mixing Height.......13000 ft AGL until 1900. 2000 ft AGL after
2000.
Transport Winds.....Northeast 5 mph until 2400, then south.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Sunny (0-10%) until 1200, then partly cloudy
(50-60%). Scattered showers and thunderstorms
after 1200.
Chc of lightning....40 percent.
Max temperature.....74-84 F.
Min humidity........12-22%.
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....North 5 to 10 mph.
Mixing Height.......3500 ft AGL until 1000, then 13000 ft AGL.
Transport Winds.....Southwest 5 mph until 1200, then north.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Scattered showers and thunderstorms.
Lows 51-61. Highs 81-91. Winds less than 15 mph.
.FRIDAY...Partly cloudy. Numerous showers and scattered
thunderstorms. Lows 52-62. Highs 80-90. Winds less than 15 mph.
.SATURDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms. Lows 51-61. Highs 76-86. Winds less than 15 mph.
.SUNDAY...Mostly cloudy. Showers with numerous thunderstorms.
Lows 48-58. Highs 72-82.
.MONDAY...Mostly cloudy. Numerous thunderstorms and scattered
showers. Lows 47-57. Highs 71-81.
$$
COZ292-191230-
North Fork Forecast Area-
228 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Clear (0-10%).
Chc of lightning....0 percent.
Min temperature.....52-62 F near 6000 feet
51-61 F near 8000 feet.
Max humidity........30-40%.
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....West 5 to 10 mph.
Mixing Height.......10500 ft AGL until 2000, then 2000 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 (10-20%).
Chc of lightning....0 percent.
Max temperature.....87-97 F near 6000 feet
78-88 F near 8000 feet.
Min humidity........5-10%.
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 5 to 10 mph.
Mixing Height.......3500 ft AGL until 1100. 13500 ft AGL after
1200.
Transport Winds.....Southeast 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 1200. Good after 1500.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (10-20%).
Chc of lightning....0 percent.
Min temperature.....54-64 F near 6000 feet
52-62 F near 8000 feet.
Max humidity........38-48%.
20-foot winds.......Downslope/downvalley winds 3 to 6 mph.
Localized gusts up to 20 mph.
CWR.................0 percent.
15K Ft MSL Winds....Northeast 5 to 10 mph shifting to the west
after midnight.
Mixing Height.......11500 ft AGL until 1900, then 2000 ft AGL.
Transport Winds.....Northwest 5 to 10 mph until 2400, then
southeast.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Near 6000 feet, mostly sunny (20-30%), isolated
showers and thunderstorms after 1200. Near 8000
feet, sunny (0-10%) until 1200, then partly
cloudy (30-40%), scattered showers and isolated
thunderstorms after 1200.
Chc of lightning....20 percent.
Max temperature.....88-98 F near 6000 feet
79-89 F near 8000 feet.
Min humidity........9-14%.
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....North 5 to 10 mph.
Mixing Height.......3000 ft AGL until 1000. 14000 ft AGL after
1200.
Transport Winds.....Southeast 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 0900. Good after 1500.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Isolated showers and thunderstorms near
6000 feet and scattered showers and isolated thunderstorms near
8000 feet. Lows 58-68. Highs 92-102. Winds less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 59-69. Highs 91-101. Winds less than 15 mph.
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 59-69. Highs 87-97. Winds less than 15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 57-67. Highs 82-92.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 55-65. Highs 80-90.
$$
COZ293-191230-
Gunnison Basin Forecast Area-
228 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Partly cloudy (30-40%).
Chc of lightning....0 percent.
Min temperature.....50-60 F.
Max humidity........47-57%.
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....West 5 to 10 mph.
Mixing Height.......11500 ft AGL until 1900. 2000 ft AGL after
2000.
Transport Winds.....Northwest 5 mph until 2400, then east.
Smoke dispersal.....Fair until 2100, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny (10-20%).
Chc of lightning....0 percent.
Max temperature.....80-90 F.
Min humidity........8-13%.
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 5 to 10 mph.
Mixing Height.......2500 ft AGL until 1000, then 13500 ft AGL.
Transport Winds.....East 5 mph until 1200, then west.
Smoke dispersal.....Poor until 0900. Good after 1200.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (10-20%).
Chc of lightning....0 percent.
Min temperature.....52-62 F.
Max humidity........55-70%.
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....Northeast 5 to 10 mph shifting to the west
after midnight.
Mixing Height.......12500 ft AGL until 1900. 2000 ft AGL after
2000.
Transport Winds.....East 5 to 10 mph.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny (20-30%). Isolated showers and
thunderstorms after 1200.
Chc of lightning....20 percent.
Max temperature.....81-91 F.
Min humidity........12-17%.
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....North 5 to 10 mph.
Mixing Height.......2500 ft AGL until 1000. 13500 ft AGL after
1200.
Transport Winds.....Southeast 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Isolated showers and thunderstorms.
Lows 48-58. Highs 82-92. Winds less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 50-60. Highs 81-91. Winds less than 15 mph.
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 48-58. Highs 76-86. Winds less than 15 mph.
.SUNDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms. Lows 48-58. Highs 72-82.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 46-56. Highs 70-80.
$$
COZ207-191230-
Southwest Colorado Lower Forecast Area-
228 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (10-20%).
Chc of lightning....0 percent.
Min temperature.....55-65 F.
Max humidity........33-43%.
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....Northwest 5 to 10 mph shifting to the southwest
after midnight.
Mixing Height.......11500 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....Northwest 5 to 10 mph until 2400, then east.
Smoke dispersal.....Fair until 2100, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny (10-20%).
Chc of lightning....0 percent.
Max temperature.....88-98 F.
Min humidity........7-12%.
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 5 mph shifting to the north in the
afternoon.
Mixing Height.......2000 ft AGL until 1000. 14500 ft AGL after
1200.
Transport Winds.....East 5 to 10 mph until 1200, then west.
Smoke dispersal.....Poor until 0900. Good after 1200.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (20-30%). Isolated showers and
thunderstorms until 2400.
Chc of lightning....10 percent.
Min temperature.....59-69 F.
Max humidity........47-57%.
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....Northeast 5 to 10 mph.
Mixing Height.......13500 ft AGL until 1900. 1500 ft AGL after
2000.
Transport Winds.....Southwest 5 to 10 mph until 2400, then
southeast.
Smoke dispersal.....Fair until 2100, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny (10-20%) until 1200, then partly
cloudy (40-50%). Scattered showers and isolated
thunderstorms after 1200.
Chc of lightning....20 percent.
Max temperature.....89-99 F.
Min humidity........12-17%.
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized
gusts up to 20 mph.
CWR.................10 percent.
15K Ft MSL Winds....Northeast 5 to 10 mph.
Mixing Height.......3000 ft AGL until 1000. 14000 ft AGL after
1200.
Transport Winds.....Southeast 5 to 10 mph until 1200, then
southwest.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Isolated showers and thunderstorms.
Lows 57-67. Highs 93-103. Winds less than 15 mph.
.FRIDAY...Partly cloudy. Scattered thunderstorms and isolated
showers. Lows 59-69. Highs 92-102. Winds less than 15 mph.
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 59-69. Highs 88-98. Winds less than 15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 57-67. Highs 84-94.
.MONDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 55-65. Highs 83-93.
$$
COZ294-191230-
Southwest Colorado Upper West Forecast Area-
228 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (10-20%).
Chc of lightning....0 percent.
Min temperature.....52-62 F.
Max humidity........38-48%.
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....Northwest 5 to 10 mph shifting to the southwest
after midnight.
Mixing Height.......10500 ft AGL until 2000, then 1000 ft AGL.
Transport Winds.....North 5 to 10 mph until 2400, then east.
Smoke dispersal.....Fair until 2100, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny (20-30%). Isolated showers and
thunderstorms.
Chc of lightning....0 percent.
Max temperature.....78-88 F.
Min humidity........8-13%.
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 5 to 10 mph shifting to the west in
the afternoon.
Mixing Height.......1000 ft AGL until 0900. 13500 ft AGL after
1000.
Transport Winds.....Southeast 5 mph until 1200, then west.
Smoke dispersal.....Poor until 0900. Good after 1200.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (20-30%). Isolated showers and
thunderstorms until 2400.
Chc of lightning....10 percent.
Min temperature.....55-65 F.
Max humidity........57-72%.
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....Northwest 5 to 10 mph.
Mixing Height.......12500 ft AGL until 1900. 1500 ft AGL after
2000.
Transport Winds.....North 5 to 10 mph until 2400, then southeast.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Sunny (0-10%) until 1200, then partly cloudy
(50-60%). Scattered showers and thunderstorms
after 1200.
Chc of lightning....30 percent.
Max temperature.....77-87 F.
Min humidity........16-26%.
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....North 5 to 10 mph.
Mixing Height.......3000 ft AGL until 1000, then 10500 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. Scattered showers and thunderstorms.
Lows 50-60. Highs 82-92. Winds less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 51-61. Highs 82-92. Winds less than 15 mph.
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 50-60. Highs 77-87. Winds less than 15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 48-58. Highs 74-84.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 47-57. Highs 73-83.
$$
COZ295-191230-
Southwest Colorado Upper East Forecast Area-
228 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Partly cloudy (30-40%). Isolated showers and
thunderstorms until 2400.
Chc of lightning....10 percent.
Min temperature.....50-60 F.
Max humidity........54-64%.
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....Northwest 5 to 10 mph shifting to the east 5
mph after midnight.
Mixing Height.......10500 ft AGL until 2000, then 2000 ft AGL.
Transport Winds.....North 5 to 10 mph until 2400, then northeast.
Smoke dispersal.....Fair until 2100, then poor.
.TUESDAY...
Sky/weather.........Partly cloudy (40-50%). Isolated showers and
thunderstorms.
Chc of lightning....20 percent.
Max temperature.....81-91 F.
Min humidity........11-21%.
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....Northeast 5 to 10 mph shifting to the north in
the afternoon.
Mixing Height.......3000 ft AGL until 1000, then 12500 ft AGL.
Transport Winds.....Northeast 5 mph until 1200, then west.
Smoke dispersal.....Poor until 0900. Good after 1200.
.TUESDAY NIGHT...
Sky/weather.........Partly cloudy (40-50%). Isolated thunderstorms
until 2400. Isolated showers.
Chc of lightning....20 percent.
Min temperature.....50-60 F.
Max humidity........62-77%.
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....Northwest 5 to 10 mph.
Mixing Height.......10000 ft AGL until 1900. 2000 ft AGL after
2000.
Transport Winds.....Southeast 5 to 10 mph until 2400, then
northeast.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny (10-20%) until 1200, then partly
cloudy (50-60%). Scattered showers and
thunderstorms after 1200.
Chc of lightning....40 percent.
Max temperature.....80-90 F.
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....North 5 to 10 mph.
Mixing Height.......3500 ft AGL until 1000, then 9500 ft AGL.
Transport Winds.....North 5 mph.
Smoke dispersal.....Poor until 1200, then good until 1500, then
fair.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 49-59. Highs 84-94. Winds less than 15 mph.
.FRIDAY...Partly cloudy. Numerous showers and thunderstorms. Lows
50-60. Highs 81-91. Winds less than 15 mph.
.SATURDAY...Mostly cloudy. Numerous showers and thunderstorms.
Lows 48-58. Highs 77-87. Winds less than 15 mph.
.SUNDAY...Mostly cloudy. Numerous showers and thunderstorms. Lows
47-57. Highs 74-84.
.MONDAY...Mostly cloudy. Numerous thunderstorms and scattered
showers. Lows 46-56. Highs 73-83.
$$
UTZ485-191230-
Eastern Ashley National Forest-
228 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (20-30%).
Chc of lightning....0 percent.
Min temperature.....55-65 F near 7000 feet
40-50 F near 10000 feet.
24 hr trend......3 degrees cooler.
Max humidity........24-34%.
24 hr trend......25% drier.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
Mixing Height.......11000 ft AGL until 2000, then 2000 ft AGL.
Transport Winds.....West 5 to 10 mph.
Clearing Index......1050 until 1900. Less than 500 after 2000.
.TUESDAY...
Sky/weather.........Sunny (0-10%).
Chc of lightning....0 percent.
Max temperature.....80-90 F near 7000 feet
69-79 F near 10000 feet.
24 hr trend......5 degrees warmer.
Min humidity........7-12%.
24 hr trend......2% 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. 13500 ft AGL after
1200.
Transport Winds.....West 5 mph.
Clearing Index......Less than 500 until 1100. 1000 after 1200.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (10-20%).
Chc of lightning....0 percent.
Min temperature.....57-67 F near 7000 feet
43-53 F near 10000 feet.
24 hr trend......1 degree warmer.
Max humidity........20-30%.
24 hr trend......12% drier.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
Mixing Height.......12000 ft AGL until 1900. 1500 ft AGL after
2000.
Transport Winds.....Southeast 5 mph until 2400, then west.
Clearing Index......750 until 1900. Less than 500 after 2000.
.WEDNESDAY...
Sky/weather.........Mostly sunny (10-20%).
Chc of lightning....0 percent.
Max temperature.....82-92 F near 7000 feet
70-80 F near 10000 feet.
24 hr trend......1 degree warmer.
Min humidity........8-13%.
24 hr trend......1% wetter.
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized
gusts up to 20 mph in the afternoon.
CWR.................0 percent.
Mixing Height.......2000 ft AGL until 1000. 15000 ft AGL after
1200.
Transport Winds.....Southwest 5 mph.
Clearing Index......Less than 500 until 1000. 1050 after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 58-68. Highs 80-90. Winds less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms .
Lows 55-65. Highs 79-89. Winds less than 15 mph.
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms .
Lows 55-65. Highs 78-88. Winds less than 15 mph.
.SUNDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms near 7000 feet and numerous showers and
thunderstorms near 10000 feet. Lows 54-64. Highs 74-84.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms .
Lows 52-62. Highs 71-81.
$$
UTZ486-191230-
Eastern Uinta Basin-
228 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Clear (0-10%).
Chc of lightning....0 percent.
Min temperature.....56-66 F.
24 hr trend......3 degrees warmer.
Max humidity........17-27%.
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.......10500 ft AGL until 2000, then 2000 ft AGL.
Transport Winds.....West 5 to 10 mph until 2400, then north.
Clearing Index......1050 until 1900. Less than 500 after 2000.
.TUESDAY...
Sky/weather.........Sunny (0-10%).
Chc of lightning....0 percent.
Max temperature.....85-95 F near 5000 feet
74-84 F near 8000 feet.
24 hr trend......4 degrees warmer.
Min humidity........4-9%.
24 hr trend......2% 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. 14500 ft AGL after
1200.
Transport Winds.....East 5 mph until 1200, then southwest.
Clearing Index......Less than 500 until 1100. 1000 after 1200.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (10-20%).
Chc of lightning....0 percent.
Min temperature.....58-68 F.
24 hr trend......1 degree warmer.
Max humidity........14-24%.
24 hr trend......4% drier.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
Mixing Height.......13000 ft AGL until 1900. 2000 ft AGL after
2000.
Transport Winds.....North 5 mph.
Clearing Index......800 until 1900. Less than 500 after 2000.
.WEDNESDAY...
Sky/weather.........Mostly sunny (10-20%).
Chc of lightning....0 percent.
Max temperature.....87-97 F near 5000 feet
76-86 F near 8000 feet.
24 hr trend......Unchanged.
Min humidity........5-10%.
24 hr trend......1% wetter.
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. 15500 ft AGL after
1200.
Transport Winds.....Southeast 5 mph until 1200, then southwest.
Clearing Index......Less than 500 until 1100. 1050 after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Isolated showers and thunderstorms near
6000 feet and scattered showers and thunderstorms near 8000 feet
. Lows 62-72. Highs 87-97. Winds less than 15 mph.
.FRIDAY...Partly cloudy. Isolated showers and thunderstorms near
6000 feet and scattered showers and thunderstorms near 8000 feet
. Lows 62-72. Highs 85-95. Winds less than 15 mph.
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 61-71. Highs 84-94. Winds less than 15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms .
Lows 60-70. Highs 79-89.
.MONDAY...Partly cloudy near 6000 feet and mostly cloudy near
8000 feet and scattered showers and thunderstorms . Lows 57-67.
Highs 77-87.
$$
UTZ487-191230-
Book Cliffs-
228 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Clear (0-10%).
Chc of lightning....0 percent.
Min temperature.....59-69 F.
24 hr trend......3 degrees warmer.
Max humidity........16-26%.
24 hr trend......6% drier.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
Mixing Height.......11500 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....Southwest 5 mph.
Clearing Index......1050 until 1900. Less than 500 after 2000.
.TUESDAY...
Sky/weather.........Sunny (0-10%).
Chc of lightning....0 percent.
Max temperature.....85-95 F near 5000 feet
79-89 F near 8000 feet.
24 hr trend......4 degrees warmer.
Min humidity........3-8%.
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.......1500 ft AGL until 1000. 14000 ft AGL after
1200.
Transport Winds.....Southeast 5 mph until 1200, then northwest.
Clearing Index......Less than 500 until 1100. 1050 after 1200.
.TUESDAY NIGHT...
Sky/weather.........Clear (0-10%).
Chc of lightning....0 percent.
Min temperature.....60-70 F.
24 hr trend......1 degree cooler.
Max humidity........15-25%.
24 hr trend......3% drier.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
Mixing Height.......13000 ft AGL until 1900. 1500 ft AGL after
2000.
Transport Winds.....East 5 mph until 2400, then south.
Clearing Index......1000 until 1900. Less than 500 after 2000.
.WEDNESDAY...
Sky/weather.........Mostly sunny (10-20%).
Chc of lightning....0 percent.
Max temperature.....87-97 F near 5000 feet
80-90 F near 8000 feet.
24 hr trend......1 degree warmer.
Min humidity........5-10%.
24 hr trend......2% wetter.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................0 percent.
Mixing Height.......1500 ft AGL until 1000. 15000 ft AGL after
1200.
Transport Winds.....Southwest 5 mph.
Clearing Index......Less than 500 until 1100. 1050 after 1300.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Scattered showers and isolated
thunderstorms. Lows 60-70. Highs 90-100. Winds less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 60-70. Highs 88-98. Winds less than 15 mph.
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms .
Lows 60-70. Highs 86-96. Winds less than 15 mph.
.SUNDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms near 6000 feet and numerous showers and scattered
thunderstorms near 8000 feet. Lows 59-69. Highs 82-92.
.MONDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms near 6000 feet and numerous showers and scattered
thunderstorms near 8000 feet. Lows 57-67. Highs 80-90.
$$
UTZ490-191230-
Colorado River Basin-
228 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Clear (0-10%).
Chc of lightning....0 percent.
Min temperature.....61-71 F.
24 hr trend......3 degrees warmer.
Max humidity........13-23%.
24 hr trend......5% drier.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
Mixing Height.......10000 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....Northwest 5 mph until 2400, then northeast.
Clearing Index......1050 until 1900. Less than 500 after 2000.
.TUESDAY...
Sky/weather.........Sunny (0-10%).
Chc of lightning....0 percent.
Max temperature.....94-104 F near 5000 feet
83-93 F near 7000 feet.
24 hr trend......4 degrees warmer.
Min humidity........3-8%.
24 hr trend......2% 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 1100. 13500 ft AGL after
1300.
Transport Winds.....Northeast 5 to 10 mph until 1200, then
northwest.
Clearing Index......Less than 500 until 1300, then 850.
.TUESDAY NIGHT...
Sky/weather.........Clear (0-10%).
Chc of lightning....0 percent.
Min temperature.....63-73 F.
24 hr trend......1 degree warmer.
Max humidity........15-25%.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
Mixing Height.......12000 ft AGL until 1900. 1500 ft AGL after
2000.
Transport Winds.....North 5 mph until 2400, then east.
Clearing Index......700 until 1900. Less than 500 after 2000.
.WEDNESDAY...
Sky/weather.........Mostly sunny (10-20%). Isolated showers and
thunderstorms after 1200.
Chc of lightning....10 percent.
Max temperature.....94-104 F near 5000 feet
83-93 F near 7000 feet.
24 hr trend......Unchanged.
Min humidity........7-12%.
24 hr trend......4% wetter.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
Mixing Height.......3000 ft AGL until 1100, then 13500 ft AGL.
Transport Winds.....Southeast 5 to 10 mph until 1200, then
southwest.
Clearing Index......Less than 500 until 1300. 1000 after 1500.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Isolated showers and thunderstorms .
Lows 65-75. Highs 95-105. Winds less than 15 mph.
.FRIDAY...Partly cloudy. Isolated showers and thunderstorms near
5000 feet and scattered showers and thunderstorms near 7000 feet
. Lows 66-76. Highs 94-104. Winds less than 15 mph.
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 66-76. Highs 90-100. Winds less than 15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms .
Lows 65-75. Highs 86-96.
.MONDAY...Partly cloudy near 5000 feet and mostly cloudy near
7000 feet and scattered showers and thunderstorms near 5000 feet
and numerous showers and scattered thunderstorms near 7000 feet.
Lows 63-73. Highs 85-95.
$$
UTZ491-191230-
Southeast Utah-
228 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (10-20%).
Chc of lightning....0 percent.
Min temperature.....61-71 F.
24 hr trend......1 degree warmer.
Max humidity........21-31%.
24 hr trend......2% drier.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
Mixing Height.......10500 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....Northwest 5 mph until 2400, then east.
Clearing Index......900 until 1900. Less than 500 after 2000.
.TUESDAY...
Sky/weather.........Sunny (0-10%).
Chc of lightning....0 percent.
Max temperature.....92-102 F near 5000 feet
79-89 F near 8000 feet.
24 hr trend......4 degrees warmer.
Min humidity........7-12%.
24 hr trend......Unchanged.
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 1100. 14000 ft AGL after
1200.
Transport Winds.....East 5 mph.
Clearing Index......Less than 500 until 1200. 950 after 1300.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (10-20%).
Chc of lightning....0 percent.
Min temperature.....63-73 F near 5000 feet
56-66 F near 8000 feet.
24 hr trend......4 degrees warmer.
Max humidity........33-43%.
24 hr trend......15% wetter.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
Mixing Height.......11000 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....North 5 to 10 mph until 2400, then southeast.
Clearing Index......900 until 1900. Less than 500 after 2000.
.WEDNESDAY...
Sky/weather.........Near 5000 feet, mostly sunny (20-30%), isolated
showers and thunderstorms after 1200. Near 8000
feet, mostly sunny (10-20%) until 1200, then
partly cloudy (40-50%), scattered showers and
isolated thunderstorms after 1200.
Chc of lightning....20 percent.
Max temperature.....92-102 F near 5000 feet
79-89 F near 8000 feet.
24 hr trend......Unchanged.
Min humidity........12-17%.
24 hr trend......6% wetter.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
Mixing Height.......3000 ft AGL until 1100, then 13500 ft AGL.
Transport Winds.....Southeast 5 mph.
Clearing Index......900.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Isolated showers and thunderstorms near
5000 feet and scattered showers and thunderstorms near 8000 feet
. Lows 64-74. Highs 94-104. Winds less than 15 mph.
.FRIDAY...Mostly clear. Isolated showers and thunderstorms near
5000 feet and scattered showers and thunderstorms near 8000 feet
. Lows 64-74. Highs 94-104. Winds less than 15 mph.
.SATURDAY...Partly cloudy. Isolated showers and thunderstorms
near 5000 feet and scattered showers and thunderstorms near
8000 feet. Lows 65-75. Highs 90-100. Winds less than 15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms .
Lows 63-73. Highs 87-97.
.MONDAY...Partly cloudy near 5000 feet and mostly cloudy near
8000 feet and scattered showers and thunderstorms near 5000 feet
and numerous showers and scattered thunderstorms near 8000 feet.
Lows 61-71. Highs 86-96.
$$