National Weather Service United States Department of Commerce

Unsettled Weather in the Eastern U.S. through Memorial Day

Wet, stormy, and unsettled weather continues for much of the eastern half of the U.S. through Memorial Day. There is potential for scattered flash flooding across the Central Gulf Coast into North Georgia and across the Upper Ohio Valley. Severe storms capable of hail/wind may occur across the Middle Missouri Valley/Siouxland and across other parts of the central and southern Plains and Southeast. Read More >

COZ205-251115-
COZ205-251115-
Colorado River Headwaters-
114 PM MDT Sun May 24 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
114 PM MDT Sun May 24 2026

.DISCUSSION...
Showers and thunderstorms are expected each afternoon and evening
through Tuesday with Tuesday seeing the most coverage. Moisture 
will increase day by day so critical fire weather conditions are 
not a concern for RH or winds. Winds increase midweek onwards and 
with dry air moving in, critical fire weather conditons are 
possible for much of eastern Utah and portions of western Colorado
for the rest 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...


.TONIGHT...
Sky/weather.........Partly cloudy (30-40%). 
Chc of lightning....0 percent. 
Min temperature.....41-51 F. 
Max humidity........56-66%. 
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 15 to 20 mph decreasing to 10 to 15 mph 
                    after midnight. 
Mixing Height.......8000 ft AGL until 2000, then 500 ft AGL. 
Transport Winds.....Southwest 5 to 10 mph until 2400, then east. 
Smoke dispersal.....Fair until 2100, then poor. 

.MEMORIAL DAY...
Sky/weather.........Partly cloudy (50-60%). Scattered showers and 
                    isolated thunderstorms after 1200. 
Chc of lightning....20 percent. 
Max temperature.....69-79 F. 
Min humidity........17-27%. 
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 10 to 15 mph. 
Mixing Height.......1000 ft AGL until 0900, then 6500 ft AGL until 
                    1100, then 10000 ft AGL until 1700, then 5500 
                    ft AGL. 
Transport Winds.....South 5 mph. 
Smoke dispersal.....Poor until 0900. Good after 1200. 

.MONDAY NIGHT...
Sky/weather.........Mostly cloudy (60-70%). Isolated thunderstorms 
                    until 2400. Isolated showers. 
Chc of lightning....10 percent. 
Min temperature.....41-51 F. 
Max humidity........69-84%. 
20-foot winds.......Downslope/downvalley winds 3 to 6 mph. 
                    Localized gusts up to 20 mph in the evening. 
CWR.................10 percent. 
15K Ft MSL Winds....South 15 to 20 mph. 
Mixing Height.......3500 ft AGL until 2000, then 1000 ft AGL. 
Transport Winds.....Southeast 5 mph. 
Smoke dispersal.....Poor. 

.TUESDAY...
Sky/weather.........Mostly cloudy (70-80%). Scattered showers and 
                    isolated thunderstorms until 1200, then showers 
                    and scattered thunderstorms. 
Chc of lightning....50 percent. 
Max temperature.....63-73 F. 
Min humidity........35-45%. 
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized 
                    gusts up to 20 mph in the afternoon. 
CWR.................70 percent. 
15K Ft MSL Winds....South 15 to 20 mph. 
Mixing Height.......1500 ft AGL until 0900, then 5500 ft AGL. 
Transport Winds.....Southwest 5 mph. 
Smoke dispersal.....Poor until 0900. Fair after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.WEDNESDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 36-46. Highs 65-75. Winds less than 15 mph. 
.THURSDAY...Mostly clear. Isolated showers and thunderstorms.
Lows 37-47. Highs 69-79. Winds less than 15 mph. 
.FRIDAY...Mostly clear. Isolated showers and thunderstorms. Lows
38-48. Highs 64-74. Southwest winds 10 to 20 mph with gusts to 
30 mph. 
.SATURDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 35-45. Highs 62-72. 
.SUNDAY...Mostly clear. Isolated showers and thunderstorms. Lows
36-46. Highs 65-75.