11 AM MST, Saturday, February 1, 2020
Snow and cold is on the way, but Groundhog Day (Sunday) will bring another day of unseasonably warm weather. Of course the price to pay for mid-winter warmth is often gusty winds near the foothills, and that is certainly playing out today. Intermittent gusty winds are likely through Sunday.
The record highs on Sunday for Cheyenne, Fort Collins, Boulder, Denver, and Colorado Springs are 66, 72, 74, 74, and 66, all set in 1934. We will likely stay just below those records, but it will be close.
Cold front and snow
The cold air mass will likely be in place by daybreak Monday for Denver northward. The cold air will be low level at first so it may still be relatively mild early Monday in Nederland and Colorado Springs.
With the shallow cold air there is a good chance for low clouds and some light snow or freezing drizzle Monday morning. The chance for heavier snow increases Monday afternoon with snow likely Monday night and early Tuesday. Intermittent light snow may continue into Tuesday evening. Be prepared for a snowy commutes Monday evening and Tuesday morning.
Most likely accumulation:
5-9″ Cheyenne, Boulder, Nederland, Broomfield, western side of Denver metro, Castle Rock.
3-6″ Fort Collins, Longmont, DIA, Aurora
1-4″ Colorado Springs and the high plains of eastern Colorado (along with blowing snow)
Temperatures are likely to stay below freezing Monday-Wednesday even in the lower elevations with high temperatures on Tuesday struggling to reach 20 (Colorado Springs may see temperatures a little above freezing early Monday, but then fall later in the day.)
Wednesday will likely be the coldest morning with single digits in most of the lower elevations except a few degrees below zero in the normally colder spots (like DIA).