National Weather Service United States Department of Commerce

 

COZ207-212330-
COZ207-212330-
Southwest Colorado Lower Forecast Area-
116 AM MDT Sun Jun 21 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
116 AM MDT Sun Jun 21 2026

...RED FLAG WARNING IN EFFECT MONDAY AFTERNOON THROUGH MONDAY
EVENING FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR COLORADO
FIRE WEATHER ZONES 207, 290, 291, 292, 293, 294 AND 295 BELOW
9000 FEET... 

.DISCUSSION...

Critical fire weather conditions become more marginal through the
week, focused over higher elevations where winds will be most 
likely to meet Red Flag thresholds. Peak gusts will generally be 
25-30 mph throughout the week in the locations. Relative humidity 
remains below 15% across most of the region though with single 
digit percentages expected in most valleys through Thursday.

...GUSTY ERRATIC WINDS CAN BE EXPECTED NEAR ANY SHOWERS
OR THUNDERSTORMS...
...THE SMOKE DATA IS CALCULATED FROM AN AVERAGE AT 6000 FEET MSL...


...RED FLAG WARNING IN EFFECT FROM 1 PM TO 8 PM MDT MONDAY FOR
GUSTY WINDS, LOW HUMIDITY AND DRY FUELS...

.TODAY...
Sky/weather.........Sunny (0-10%). 
Chc of lightning....0 percent. 
Max temperature.....84-94 F. 
Min humidity........3-8%. 
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....West 10 to 15 mph. 
Mixing Height.......2000 ft AGL until 1000. 14500 ft AGL after 
                    1100. 
Transport Winds.....West 5 mph until 1200, then 10 to 15 mph. 
Smoke dispersal.....Poor until 0900. Very good after 1200. 

.TONIGHT...
Sky/weather.........Clear (0-10%). 
Chc of lightning....0 percent. 
Min temperature.....51-61 F. 
Max humidity........17-27%. 
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 10 to 15 mph. 
Mixing Height.......13000 ft AGL until 2000, then 1000 ft AGL. 
Transport Winds.....West 5 to 10 mph until 2400, then east. 
Smoke dispersal.....Good until 2100, then poor. 

.MONDAY...
Sky/weather.........Sunny (0-10%). 
Chc of lightning....0 percent. 
Max temperature.....86-96 F. 
Min humidity........4-9%. 
20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming 
                    southwest 10 to 15 mph in the afternoon. 
                    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. 14000 ft AGL after 
                    1000. 
Transport Winds.....Southwest 5 to 10 mph. 
Smoke dispersal.....Poor until 0900. Excellent after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.TUESDAY...Clear. Lows 51-61. Highs 90-100. West winds 10 to
20 mph with gusts to  35 mph. 
.WEDNESDAY...Mostly clear. Lows 54-64. Highs 90-100. West winds
10 to 20 mph with gusts to  35 mph. 
.THURSDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 55-65. Highs 87-97. Southwest winds 10 to 20 mph with gusts
to  35 mph. 
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 53-63. Highs 86-96. 
.SATURDAY...Mostly clear. Isolated showers and thunderstorms.
Lows 54-64. Highs 87-97.