Mammoth Mountain 48-Hour Snow Forecast
Updated 20 May 2026 01:48 BST
2-Day Forecast for Mammoth Mountain
48-hours from 20 May.
See below for forecast detail
Mammoth Mountain Snow Forecast updated at 01:48 BST, next update expected imminently.
Forecast for today in Mammoth Mountain
Max 15℃ 59°F
Min 3℃ 38°F
Valley temperatures from an overnight low of 3℃ 38°F to daytime highs around 15℃ 59°F
Freeze-thaw (spring snow) conditions up high.
Temperature at BaseTemp at Base
Wed
20
Snow unlikely
Clear sky early, then cloudy later.
Forecast times for Mammoth Mountain are in Los Angeles (US/Pacific) time zone.
Forecast for tomorrow in Mammoth Mountain
Max 20℃ 67°F
Min 5℃ 41°F
Valley temperatures from an overnight low of 5℃ 41°F to daytime highs around 20℃ 67°F
Temperature at BaseTemp at Base
Thu
21
Snow unlikely
Cloudy early, then clear sky later.
Forecast times for Mammoth Mountain are in Los Angeles (US/Pacific) time zone.
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48-hour Forecast Detail
| Base | Snow to | Weather | Temp Town | Rain or Snow? | |||
|---|---|---|---|---|---|---|---|
| Wed | 00:00 | | Clear sky. | 3℃ 38°F | SW Light | 0% | |
| Wed | 01:00 | | Clear sky. | 3℃ 38°F | SW Light | 0% | |
| Wed | 02:00 | | Clear sky. | 3℃ 38°F | SW Light | 0% | |
| Wed | 03:00 | | Clear sky. | 3℃ 38°F | SW Light | 0% | |
| Wed | 04:00 | | Clear sky. | 3℃ 38°F | SW Light | 0% | |
| Wed | 05:00 | | Clear sky. | 3℃ 38°F | SW Calm | 0% | |
| Wed | 06:00 | | Clear sky. | 3℃ 38°F | SW Light | 0% | |
| Wed | 07:00 |  | Clear sky at altitude. Fair below. | 5℃ 40°F | SW Light | 0% | |
| Wed | 08:00 | | Cloudy at altitude. Mixed below. | 8℃ 46°F | SW Calm | 0% | |
| Wed | 09:00 | | Clear spells at altitude. Cloud below. | 10℃ 49°F | SW Light | 0% | |
| Wed | 10:00 | | Cloudy. | 11℃ 52°F | SW Light | 0% | |
| Wed | 11:00 | | Cloudy. | 13℃ 56°F | SW Light | 0% | |
| Wed | 12:00 | | Cloudy. | 14℃ 57°F | SW Breeze | 0% | |
| Wed | 13:00 | | Cloudy. | 15℃ 58°F | SW Breeze | 0% | |
| Wed | 14:00 | | Cloudy. | 15℃ 59°F | SW Breeze | 0% | |
| Wed | 15:00 | | Cloudy. | 15℃ 58°F | SW Breeze | 5% | |
| Wed | 16:00 | | Cloudy. | 14℃ 58°F | SW Breeze | 5% | |
| Wed | 17:00 | | Cloudy. | 14℃ 56°F | SW Breeze | 5% | |
| Wed | 18:00 | | Cloudy. | 12℃ 54°F | SW Breeze | 5% | |
| Wed | 19:00 | | Cloudy. | 11℃ 52°F | SW Breeze | 5% | |
| Wed | 20:00 | | Cloudy. | 9℃ 49°F | SW Breeze | 5% | |
| Wed | 21:00 | | Cloudy. | 9℃ 47°F | SW Breeze | 5% | |
| Wed | 22:00 | | Fair at altitude. Clear below. | 8℃ 46°F | SW Light | 0% | |
| Wed | 23:00 | | Clear sky. | 7℃ 45°F | SW Light | 0% | |
| Thu | 00:00 | | Clear sky. | 7℃ 44°F | SE Light | 0% | |
| Thu | 01:00 | | Clear sky. | 6℃ 43°F | SE Light | 0% | |
| Thu | 02:00 | | Clear sky. | 6℃ 42°F | SE Light | 0% | |
| Thu | 03:00 | | Clear sky. | 6℃ 42°F | SE Light | 0% | |
| Thu | 04:00 | | Clear sky. | 5℃ 42°F | SE Light | 0% | |
| Thu | 05:00 | | Clear sky. | 5℃ 41°F | SE Light | 0% | |
| Thu | 06:00 | | Clear sky. | 5℃ 41°F | SE Light | 0% | |
| Thu | 07:00 | | Clear sky. | 6℃ 43°F | SE Light | 0% | |
| Thu | 08:00 | | Clear sky. | 10℃ 50°F | SE Light | 0% | |
| Thu | 09:00 | | Clear sky. | 12℃ 54°F | SE Light | 0% | |
| Thu | 10:00 | | Clear sky. | 15℃ 59°F | SE Light | 0% | |
| Thu | 11:00 | | Clear sky. | 18℃ 63°F | SE Calm | 0% | |
| Thu | 12:00 | | Clear sky. | 20℃ 67°F | SE Light | 5% | |
| Thu | 13:00 | | Clear sky. | 20℃ 67°F | SE Light | 5% | |
| Thu | 14:00 | | Cloudy. | 19℃ 66°F | SE Breeze | 5% | |
| Thu | 15:00 | | Cloudy. | 16℃ 61°F | SE Breeze | 5% | |
| Thu | 16:00 | | Cloudy. | 17℃ 62°F | SE Light | 5% | |
| Thu | 17:00 | | Cloudy. | 16℃ 60°F | SE Light | 5% | |
| Thu | 18:00 | | Cloudy. | 15℃ 58°F | SE Light | 5% | |
| Thu | 19:00 | | Cloudy. | 14℃ 58°F | SE Light | 5% | |
| Thu | 20:00 | | Cloudy. | 12℃ 53°F | SE Calm | 5% | |
| Thu | 21:00 | | Clear sky. | 10℃ 50°F | SE Calm | 5% | |
| Thu | 22:00 | | Cloudy. | 10℃ 50°F | SE Calm | 5% | |
| Thu | 23:00 | | Cloudy. | 10℃ 49°F | SE Light | 5% | |
Snow Forecast near Mammoth Mountain
Snow forecasts for nearby ski areas.
Snow Forecasts for other Ski Resorts near Mammoth Mountain are not available.
Mammoth Mountain Snow
For current snow depths and skiing conditions, see our Current Snow Report for Mammoth Mountain.
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 piste 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.
Snow Reliability
Mammoth Mountain is known for its excellent snow reliability, with an average snowfall of over 400 inches annually. For the latest snow conditions and depth information, be sure to check J2Ski.