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A-Basin Winter Weather

What a typical winter is like at A-Basin: 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 A-Basin gets measurable precipitation (rain vs. snow), and typical high/low temperatures, December 1–April 15, based on 40 years of real ERA5 reanalysis data.

31% of days get measurable precipitation, season average

Precipitation calibrated against real observations from the Grizzly Peak SNOTEL station (×1.54 correction). See full station data

Dec 25%
Jan 26%
Feb 32%
Mar 36%
Apr 1-15 37%
Elevation:

Precipitation frequency by week (rain vs. snow)

Average high/low temperature by week

Winter Sun & Clouds

How much of A-Basin'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.

85% of possible sunshine, Dec–Mar average
Dec 86%
Jan 85%
Feb 84%
Mar 85%

A-Basin and El Niño → A-Basin climate change profile → Back to A-Basin →