GRAND JUNCTION, Colo. – After a wet Columbus Day weekend, western Colorado wakes up to cooler air and a gradual drying trend spreading in from the west. Rainfall that caused minor flooding across Mesa County and parts of the Uncompahgre Valley is easing, but lingering water on roads may still cause slick travel early today.
According to the National Weather Service in Grand Junction, a Flood Watch remains in effect through early Sunday morning as runoff continues from Saturday’s downpours. The heaviest rainfall fell across the San Juan Mountains, with isolated debris flow risks near recent burn scars, including the Pine Gulch and Pack Creek areas. Drivers should stay alert on I-70 and U.S. 50, especially through canyon zones prone to water pooling.
Drier air builds Monday, bringing partly sunny skies for the holiday with highs near the mid-60s. As the storm system exits into the Plains, a mild ridge sets up across western Colorado by Tuesday, allowing for a welcome return of fall sunshine and a bump in temperatures toward the lower 70s.
By midweek, cooler mountain air filters in once again, with lows dipping into the upper 30s in sheltered valleys—cold enough for patchy frost in the higher terrain. Residents should plan for brisk early-morning walks and protect sensitive plants or outdoor decorations ahead of the season’s first real chill.
Halloween lovers and pumpkin patch visitors can expect dry skies later this week, perfect for outdoor plans and leaf viewing across Mesa and Delta counties.
Five-Day Forecast for Grand Junction, CO:
Sun: 64/44 – Showers early; gradual clearing west of I-70.
Mon: 67/45 – Partly sunny; lighter winds for the holiday.
Tue: 74/55 – Warm, bright skies; pleasant fall afternoon.
Wed: 69/44 – Breezy; cooling trend with patchy frost late.
Thu: 59/38 – Crisp fall air; mostly sunny and cool.
