Lower Colorado River (COZ203) - Fire Weather Forecast

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

COZ203-072300- COZ203-072300- Lower Colorado River- 247 AM MST Sun Dec 7 2025 Fire Weather Planning Forecast for Wrn Colorado and Ern Utah National Weather Service Grand Junction CO 247 AM MST Sun Dec 7 2025 .DISCUSSION... This is an automatically generated forecast with no discussion. The normal Fire Weather Forecast will resume in its entirety in the spring. ...GUSTY ERRATIC WINDS CAN BE EXPECTED NEAR ANY SHOWERS OR THUNDERSTORMS... ...THE SMOKE DATA IS CALCULATED FROM AN AVERAGE AT 6000 FEET MSL... .TODAY... Sky/weather.........Mostly sunny (20-30%) until 1200, then partly cloudy (40-50%). Chc of lightning....0 percent. Max temperature.....34-44 F near 6000 feet 28-38 F near 8000 feet. Min humidity........46-56%. 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 35 to 45 mph decreasing to 30 to 40 mph in the afternoon. Mixing Height.......3000 ft AGL. Transport Winds.....Southwest 5 mph. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Partly cloudy (50-60%) until 2400, then mostly cloudy (60-70%). Chc of lightning....0 percent. Min temperature.....21-31 F. Max humidity........68-83%. 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 25 to 35 mph. Mixing Height.......2000 ft AGL. Transport Winds.....Southeast 5 mph. Smoke dispersal.....Poor. .MONDAY... Sky/weather.........Partly cloudy (40-50%) until 1200, then mostly sunny (20-30%). Chc of lightning....0 percent. Max temperature.....38-48 F near 6000 feet 31-41 F near 8000 feet. Min humidity........47-57%. 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 25 to 35 mph. Mixing Height.......2000 ft AGL. Transport Winds.....Southeast 5 mph until 1200, then west. Smoke dispersal.....Poor. .FORECAST FOR DAY 3 THROUGH 7... .TUESDAY...Partly cloudy. Lows 20-30. Highs 39-49. Winds less than 15 mph. .WEDNESDAY...Partly cloudy. Isolated showers. Lows 26-36. Highs 43-53. Winds less than 15 mph. .THURSDAY...Partly cloudy. Isolated showers. Lows 28-38. Highs 44-54. Winds less than 15 mph. .FRIDAY...Partly cloudy. Isolated showers. Lows 26-36. Highs 43-53. .SATURDAY...Mostly clear. Lows 24-34. Highs 44-54.