Strong thunderstorms may bring excessive rainfall and flooding over parts of the northern Gulf Coast today and over parts of the southern Rockies into the High Plains today through the weekend. A refreshingly cool and dry air mass will continue to produce below average temperatures across the central and eastern U.S. through the weekend. Read More >
COZ207-301215- COZ207-301215- Southwest Colorado Lower Forecast Area- 202 PM MDT Fri Aug 29 2025 Fire Weather Planning Forecast for Wrn Colorado and Ern Utah National Weather Service Grand Junction CO 202 PM MDT Fri Aug 29 2025 .DISCUSSION... Drier conditions develop Saturday and into next week, with a few terrain based showers possible Saturday. Lower relative humidity values could produced localized critical fire weather conditions early next week as we return to hot and dry across the region. ...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%). Isolated showers and thunderstorms until 2400. Chc of lightning....10 percent. Min temperature.....49-59 F. Max humidity........71-86%. 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....West 20 to 25 mph becoming northwest 15 to 20 mph after midnight. Mixing Height.......6000 ft AGL until 2000, then 1500 ft AGL. Transport Winds.....North 5 to 10 mph. Smoke dispersal.....Poor. .SATURDAY... Sky/weather.........Mostly sunny (10-20%). Chc of lightning....0 percent. Max temperature.....77-87 F. Min humidity........15-25%. 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....Northwest 10 to 15 mph. Mixing Height.......3000 ft AGL until 1100, then 10500 ft AGL. Transport Winds.....North 5 to 10 mph. Smoke dispersal.....Poor until 0900. Very good after 1200. .SATURDAY NIGHT... Sky/weather.........Mostly clear (10-20%). Chc of lightning....0 percent. Min temperature.....49-59 F. Max humidity........49-59%. 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....North 5 to 10 mph shifting to the southeast after midnight. Mixing Height.......10000 ft AGL until 1900. 1500 ft AGL after 2000. Transport Winds.....Northeast 5 to 10 mph. Smoke dispersal.....Good until 2100, then poor. .SUNDAY... Sky/weather.........Sunny (0-10%). Chc of lightning....0 percent. Max temperature.....78-88 F. Min humidity........13-23%. 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.......2500 ft AGL until 1000, then 10500 ft AGL. 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... .LABOR DAY...Clear. Lows 50-60. Highs 81-91. Winds less than 15 mph. .TUESDAY...Mostly clear. Lows 51-61. Highs 82-92. Winds less than 15 mph. .WEDNESDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 52-62. Highs 81-91. Winds less than 15 mph. .THURSDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 51-61. Highs 80-90. .FRIDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 50-60. Highs 78-88.