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Snowmass Winter Weather

What a typical winter is like at Snowmass: how often it snows (or rains), how cold it gets at the base, mid-mountain and summit, and how much sun to expect, week by week, from 40 years of weather data.

Winter Weather

How often Snowmass gets measurable precipitation (rain vs. snow), and typical high/low temperatures, December 1–April 15, based on 40 years of real ERA5 reanalysis data.

35% of days get measurable precipitation, season average

Precipitation calibrated against real observations from the North Lost Trail SNOTEL station (×1.27 correction). See full station data

Dec 29%
Jan 33%
Feb 39%
Mar 37%
Apr 1-15 37%
Elevation:

Precipitation frequency by week (rain vs. snow)

Average high/low temperature by week

Winter Sun & Clouds

How much of Snowmass's theoretically possible winter sunshine it actually gets, December–March, based on 40 years of real ERA5 satellite/reanalysis solar radiation data compared against a clear-sky model.

81% of possible sunshine, Dec–Mar average
Dec 81%
Jan 80%
Feb 80%
Mar 83%

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