Colorado River Headwaters (COZ205) - Fire Weather Forecast

COZ205-061130-
COZ205-061130-
Colorado River Headwaters-
125 PM MDT Mon Oct 5 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
125 PM MDT Mon Oct 5 2026

.DISCUSSION...

Above normal temperatures and generally dry weather will continue
to be the daily forecast through at least Friday. Lingering 
moisture will support isolated showers and thunderstorms over the 
higher terrain, particularly the San Juans, each afternoon. 
Chances of wetting rain are low through Friday, but are the 
highest on Tuesday and Wednesday over the San Juans. Critical 
fire weather conditions are not in the forecast for this week. 

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


.TONIGHT...
Sky/weather.........Partly cloudy (40-50%). 
Chc of lightning....0 percent. 
Min temperature.....44-54 F. 
Max humidity........50-60%. 
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.......4000 ft AGL until 1900, then 1000 ft AGL. 
Transport Winds.....Northwest 5 mph until 2400, then southeast. 
Smoke dispersal.....Poor. 

.TUESDAY...
Sky/weather.........Partly cloudy (50-60%). Isolated showers and 
                    thunderstorms after 1200. 
Chc of lightning....0 percent. 
Max temperature.....68-78 F. 
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....North 5 to 10 mph. 
Mixing Height.......500 ft AGL until 1000. 8000 ft AGL after 1100. 
Transport Winds.....East 5 mph until 1200, then northwest. 
Smoke dispersal.....Poor. 

.TUESDAY NIGHT...
Sky/weather.........Partly cloudy (40-50%). Isolated showers and 
                    thunderstorms until 2400. 
Chc of lightning....10 percent. 
Min temperature.....42-52 F. 
Max humidity........56-71%. 
20-foot winds.......Downslope/downvalley winds 3 to 6 mph. 
                    Localized gusts up to 25 mph in the evening. 
CWR.................10 percent. 
15K Ft MSL Winds....East 5 to 10 mph shifting to the south 10 to 15 
                    mph after midnight. 
Mixing Height.......1000 ft AGL. 
Transport Winds.....Southeast 5 mph. 
Smoke dispersal.....Poor. 

.WEDNESDAY...
Sky/weather.........Partly cloudy (30-40%). Scattered showers and 
                    isolated thunderstorms after 1200. 
Chc of lightning....20 percent. 
Max temperature.....67-77 F. 
Min humidity........20-30%. 
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....South 5 to 10 mph. 
Mixing Height.......1000 ft AGL until 1000, then 3500 ft AGL until 
                    1100, then 9000 ft AGL until 1700, then 4500 ft 
                    AGL. 
Transport Winds.....Southeast 5 mph until 1200, then southwest. 
Smoke dispersal.....Poor until 0900. Fair after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Isolated showers and thunderstorms.
Lows 40-50. Highs 65-75. Winds less than 15 mph. 
.FRIDAY...Mostly clear. Lows 40-50. Highs 64-74. Winds less than
15 mph. 
.SATURDAY...Mostly clear. Isolated showers and thunderstorms.
Lows 39-49. Highs 62-72. Southwest winds 10 to 20 mph with gusts
to  30 mph. 
.SUNDAY...Partly cloudy. Scattered showers and isolated
thunderstorms. Lows 40-50. Highs 57-67. 
.COLUMBUS DAY...Numerous showers and isolated thunderstorms. Lows
38-48. Highs 52-62.