Mammoth Mountain Snow Report and Forecast
Snow Forecast for Mammoth Mountain
This is the Snow Forecast for Mammoth Mountain, United States for 16 days from 13 November.
Updated 12 November 2025 22:36 PST.
For Forecast detail, see below.
For current snow depths and skiing conditions, see our Current Snow Report for Mammoth Mountain.
There is some snow in the long-range forecast (8 to 16 days from today)!
J2Ski - Sign In to see the full long-range snow forecast (out to 16 days, with more weather detail).
Mammoth Mountain Snow Forecast Highlights
When will there be fresh snow in Mammoth Mountain?
| Next Snow Expected | 14 November |
|---|---|
| Next Snow Amount | 2in |
| Next 48 Hours | 7in |
| Next 7 Days | 15in |
Forecast for today in Mammoth Mountain
Max 51°F
Min 37°F
Valley temperatures from an overnight low of 37°F to daytime highs around 51°F
Freeze-thaw conditions up high.
Temperature at BaseTemp at Base
Snowfall
Snow Line
Thu
13
New Snow
Clear sky.
Snow Line from 10,397ft to 10,135ft, with rain below.
Powder Alert!
Updated 13 November 2025 01:36 PST
Powder Possible :- 6in of Fresh Snow is forecast for Mammoth Mountain over the next 3 days.
Mammoth Mountain Snow Report
| Upper Snow Depths |
| - |
| Lower Snow Depths |
| - |
| Snow Conditions |
| - |
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Mammoth Mountain 7-Day Snow Forecast Overview
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| Thu 13 | Fri 14 | Sat 15 | Sun 16 | Mon 17 | Tue 18 | Wed 19 | |
|---|---|---|---|---|---|---|---|
| Wind | SW F4 | SW F3 | SW F2 | ||||
| 11,056ft | 36°F
| 32°F
 +5in
| 29°F
 +1in
| 27°F
+6in
| 26°F
 +1in
| 25°F
 | 26°F
|
| SW F4 | SW F3 | SW F2 | |||||
| 9,465ft | 41°F
| 38°F
 +2in
| 34°F
+1in
| 33°F
+4in
| 31°F
 | 30°F
| 33°F
|
| SW F4 | S F3 | NE F3 | |||||
| 7,874ft | 51°F
| 47°F
| 44°F
| 37°F
+3in
| 38°F
| 36°F
| 38°F
|
| Snow Line | varying 10,397ft | varying 10,135ft | varying 9,511ft | varying 8,461ft | varying 8,133ft | 7,874ft | |
| Max Town | 51°F | 47°F | 44°F | 37°F | 38°F | 36°F | 38°F |
| Min Town | 37°F | 35°F | 36°F | 30°F | 22°F | 21°F | 20°F |
This table shows the average forecast snowfall, the maximum temperature, and expected general weather at resort, lower and upper mountain levels. For daily forecast details, see below.
Mammoth Mountain Medium-Range (7-Day) Snow Forecast Detail
Note :- Mountain weather is extremely dynamic; the forecast below will change. Any forecast snow may move forward or back in the forecast, and predicted snowfall depths will be revised in subsequent updates.
Max 51°F
Min 37°F
Valley temperatures from an overnight low of 37°F to daytime highs around 51°F
Freeze-thaw conditions up high.
Temperature at BaseTemp at Base
Snowfall
Snow Line
Thu
13
New Snow
Clear sky.
Snow Line from 10,397ft to 10,135ft, with rain below.
Max 47°F
Min 35°F
Valley temperatures from an overnight low of 35°F to daytime highs around 47°F
Freeze-thaw from mid-mountain up.
Temperature at BaseTemp at Base
Snowfall
Snow Line
Fri
14
up to 5in New Snow
Clear sky early, then clear spells later.
Snow Line from 10,135ft to 8,757ft, with rain below.
Max 44°F
Min 36°F
Valley temperatures from an overnight low of 36°F to daytime highs around 44°F
Temperature at BaseTemp at Base
Snowfall
Snow Line
Sat
15
up to 1in New Snow
Clear spells, cloudy, fog later.
Snow Line from 9,511ft to 9,380ft, with rain below.
Max 37°F
Min 30°F
Valley temperatures from an overnight low of 30°F to daytime highs around 37°F
Temperature at BaseTemp at Base
Snowfall
Snow Line
Sun
16
3in to 6in New Snow
Snow showers, heavy snow showers, light snow showers later.
Snow Line from 8,461ft to resort level.
Max 38°F
Min 22°F
Freeze-thaw conditions, with valley temperatures cooling to 22°F and rising to 38°F
Temperature at BaseTemp at Base
Snowfall
Snow Line
Mon
17
up to 1in New Snow
Cloudy first, light snow then cloudy, snow showers later.
Snow Line from 8,133ft to resort level.
Max 36°F
Min 21°F
Freeze-thaw conditions, with valley temperatures cooling to 21°F and rising to 36°F
Temperature at BaseTemp at Base
Snowfall
Snow Line
Tue
18
Snow unlikely
Clear spells early, then cloudy later.
Max 38°F
Min 20°F
Freeze-thaw conditions, with valley temperatures cooling to 20°F and rising to 38°F
Temperature at BaseTemp at Base
Wed
19
Snow unlikely
Cloudy, clear spells, clear sky later.
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 Snow Forecast updated at 22:36 PST, next update expected imminently.
Snow Forecast near Mammoth Mountain
| Ski Area | 48 Hr | 7 Day | Th | Fr | Sa | Su | Mo | Tu | We |
|---|---|---|---|---|---|---|---|---|---|
| June Mountain | 12in | 15in |
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.
Understanding and predicting Snow Conditions in Mammoth Mountain
Here are our tips for making the most of a trip to Mammoth Mountain, with the help of the J2Ski Snow forecasts and reports. You can find some great skiing in Mammoth Mountain, but like any mountain, snow conditions change throughout the season, from day to day, and even from hour to hour.
Whether you’re sticking to the marked pistes or venturing off-piste, here’s what you need to know:
Pistes (Groomers) or Off-Piste
These can be a world apart, regarding snow conditions, even ignoring the difference between the natural terrain features to be found off-piste and the generally controlled surfaces and slopes of a pisted (groomed) run.
- Piste Conditions can range from fresh powder to firm, icy surfaces, particularly after warm spells or a busy day on the mountain with the passage of many skiers.
- Off-Piste Conditions are far more variable. Wind and sun can quickly transform fresh snow into wind crust or slushy layers, whilst cold weather can preserve stashes of powder many days after a snowfall.
WARNING - skiing off-piste (out-of-bounds) at Mammoth Mountain is not always controlled (slopes made safe from avalanche risk) or patrolled. Always check local advice, ski with safety kit (and know how to use it), and never ski alone.
Analyzing Weather and Snowfall Forecasts
Whilst no forecast can tell you exactly how snow conditions in Mammoth Mountain will develop, checking the forecast regularly should give you an idea of what to expect.
New snowfall can bring fresh powder and refresh the surfaces of pisted runs. Powder can be tracked out quickly at busy times, but in less crowded and shaded areas, fresh snow can linger for days.
Changes in weather conditions, such as milder temperatures, rain or wind, can degrade snow quality. Conversely, cold, stable weather can preserve conditions for extended periods.
Predicting Future Snow Quality
Regularly check our snow and weather forecasts for Mammoth Mountain for changes that may affect snow quality. Forecast snowfall depth and recent snowfall are good indicators of what to expect.
Use historical data and recent snow reports to understand past snow conditions and anticipate future changes.