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Mammoth Winter Weather

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

22% of days get measurable precipitation, season average
Dec 22%
Jan 22%
Feb 24%
Mar 21%
Apr 1-15 16%
Elevation:

Precipitation frequency by week (rain vs. snow)

Average high/low temperature by week

Winter Sun & Clouds

How much of Mammoth'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.

83% of possible sunshine, Dec–Mar average
Dec 83%
Jan 83%
Feb 83%
Mar 85%

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