The low temperatures Wednesday morning will be the coldest the Western Slope has experienced in quite sometime. The record numbers/low temperatures to be aware of are Grand Junction 40° from 2001 and Montrose 32° 1941.
A rare early September winter class storm system continues to impact the region through Thursday with rain, snow and freezing related hazards for many areas. Subject to change and through Wednesday night, a Winter Weather Advisory is in place north of Mesa County, a Winter Storm Warning exists for the mountains to our east (West Elks/Crested Butte and the San Juans to our south) and along the Front Range. A Freeze Warning is also in place for Pitkin and Eagle Counties along with a few high valleys in the north. Travelers can expect rain in the lower elevations with snowfall lingering in the High Country, depending on the elevation. Up to a foot of snow is to be expected above tree line. Debris flows/mudslides are to be expected below burn scars areas and falling rocks could impede your roadway travels so stay alert.
High temperatures will remain below the average through this weekend. Normal high temperatures for early September at Grand Junction is 84°, Montrose is 81°. For the late week and this upcoming weekend, the weather conditions will be clearer and drier. The return to the normal temperatures is expected this time next week along with a slight warming trend right back into the low 90s late next week. Nearly perfect early fall weather, with the Autumnal Equinox happening September 22, 2020.