Mammoth Mountain Weather
Weather Forecast for Mammoth Mountain (7,874ft to 11,056ft)
Weather Outlook from 21 April.
Mammoth Mountain Forecast
See below for the detailed long-range forecast, including lowest and highest temperatures, sunshine, cloud cover, wind and rain projections.
Mammoth Mountain Weather Forecast updated at 04:49 PDT, next update expected imminently.
Long-range Snow Outlook for Mammoth Mountain
Snowfall
Snow Line
Max 42°F
Min 11°F
12in New Snow
Snow Line from 9,675ft to resort level (7,874ft).
There is some snow in the long-range forecast (8 to 16 days from today)!
J2Ski - Sign In for a long-range snow forecast, with more weather detail.
Powder Alert!
Powder Alarm issued 21 April 2026 06:54 PDT
Powder Possible :- 11in of Fresh Snow is forecast for Mammoth Mountain over the next 2 days.
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Mammoth Mountain Daily Weather Forecast Detail
| Base | Snow and Weather | Temp Town | |
|---|---|---|---|
| Tue 21 |  | 6in to 9in New Snow | Max 38°F Min 22°F |
| Wed 22 |  | 2in to 3in New Snow | Max 33°F Min 18°F |
| Thu 23 |  | Clear sky. | Max 42°F Min 11°F |
| Fri 24 |  | New Snow | Max 42°F Min 25°F |
| Sat 25 |  | up to 1in New Snow | Max 38°F Min 26°F |
| Sun 26 | | Cloudy. | Max 40°F Min 26°F |
| Mon 27 | | Cloudy. | Max 41°F Min 29°F |
There is some snow in the long-range forecast (8 to 16 days from today)!
J2Ski - Sign In to see the full long-range weather forecast (out to 16 days, with more weather detail).
This Snow Forecast for Mammoth Mountain, United States gives the predicted Snowfall and Freezing Levels for the next week.
The forecast snowfall depths given are the likely average accumulations for the Lower and Upper slopes. The actual snow depth in Mammoth Mountain, on any given trail or itinerary, may be dramatically different, particularly if the snowfall is accompanied by high winds and/or varying air temperatures.
Snow Forecasts beyond two days ahead are subject to significant change and variable reliability.
Mammoth Mountain Weather Forecast updated at 04:49 PDT, next update expected imminently.
Current Snow
For current snow depths and skiing conditions, see our Current Snow Report for Mammoth Mountain.For more information about this American Ski Resort, See Also Skiing and Snowboarding in Mammoth Mountain .
Off-Piste Safety in Mammoth Mountain
Before skiing or snowboarding off-piste in Mammoth Mountain, you must assess the local snow conditions. Always check the local Avalanche Risk Level and ski with appropriate safety equipment.