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 15 November.
Updated 15 November 2025 19:33 NZDT.
For Forecast detail, see below.
For current snow depths and skiing conditions, see our Current Snow Report for Mammoth Mountain.
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 | 15 November |
|---|---|
| Next Snow Amount | 1cm |
| Next 48 Hours | 20cm |
| Next 7 Days | 23cm |
Forecast for today in Mammoth Mountain
Max 6℃
Min 3℃
Valley temperatures from an overnight low of 3℃ to daytime highs around 6℃
Temperature at BaseTemp at Base
Snowfall
Snow Line
Sat
15
up to 2cm New Snow
Fog early, then rain showers later.
Snow Line from 2,909m to 2,819m, with rain below.
Powder Alert!
Updated 15 November 2025 21:39 NZDT
Powder Possible :- 17cm of Fresh Snow is forecast for Mammoth Mountain over the next 2 days.
Mammoth Mountain Snow Report
| Upper Snow Depths |
| - |
| Lower Snow Depths |
| - |
| Snow Conditions |
| - |
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| Sat 15 | Sun 16 | Mon 17 | Tue 18 | Wed 19 | Thu 20 | Fri 21 | |
|---|---|---|---|---|---|---|---|
| Wind | NE F3 | SW F4 | SW F3 | S F2 | SW F2 | ||
| 3,370m | -2℃
+2cm
| -3℃
 +9cm
| -5℃
+9cm
| -4℃
 | -4℃
 | -6℃
+1cm
| -7℃
+1cm
|
| NE F3 | SW F5 | SW F3 | S F2 | SW F2 | |||
| 2,885m | 1℃
+1cm
| 0℃
+8cm
| -1℃
 +7cm
| -1℃
| -1℃
| -1℃
+1cm
| -3℃
+2cm
|
| E F2 | SW F4 | NE F2 | NE F2 | ||||
| 2,400m | 6℃
| 4℃
+4cm
| 0℃
+7cm
| 3℃
| 3℃
 | 0℃
+1cm
| 0℃
+2cm
|
| Snow Line | varying 2,909m | varying 2,829m | 2,400m | 2,400m | 2,400m | 2,400m | |
| Max Town | 6℃ | 4℃ | 0℃ | 3℃ | 3℃ | 0℃ | 0℃ |
| Min Town | 3℃ | -5℃ | -5℃ | -4℃ | -6℃ | -5℃ | -9℃ |
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 6℃
Min 3℃
Valley temperatures from an overnight low of 3℃ to daytime highs around 6℃
Temperature at BaseTemp at Base
Snowfall
Snow Line
Sat
15
up to 2cm New Snow
Fog early, then rain showers later.
Snow Line from 2,909m to 2,819m, with rain below.
Max 4℃
Min -5℃
Freeze-thaw conditions, with valley temperatures cooling to -5℃ and rising to 4℃
Temperature at BaseTemp at Base
Snowfall
Snow Line
Sun
16
4cm to 9cm New Snow
Clear spells first, heavy snow showers then cloudy, heavy snow showers later.
Snow Line from 2,829m to resort level.
Max 0℃
Min -5℃
Below freezing at all levels, with valley temperatures as low as -5℃ and not getting above 0℃
Temperature at BaseTemp at Base
Snowfall
Snow Line
Mon
17
7cm to 9cm New Snow
Light snow first, heavy snow showers then cloudy, heavy snow showers later.
Snow falling to resort level.
Max 3℃
Min -4℃
Freeze-thaw conditions, with valley temperatures cooling to -4℃ and rising to 3℃
Temperature at BaseTemp at Base
Snowfall
Snow Line
Tue
18
Snow unlikely
Snow showers early, then fog later.
Max 3℃
Min -6℃
Freeze-thaw conditions, with valley temperatures cooling to -6℃ and rising to 3℃
Temperature at BaseTemp at Base
Wed
19
Snow unlikely
Cloudy early, then clear sky later.
Max 0℃
Min -5℃
Valley temperatures from an overnight low of -5℃ to daytime highs around 0℃
Temperature at BaseTemp at Base
Snowfall
Snow Line
Thu
20
1cm New Snow
Cloudy early, then light snow later.
Snow falling to resort level.
Max 0℃
Min -9℃
Valley temperatures from an overnight low of -9℃ to daytime highs around 0℃
Temperature at BaseTemp at Base
Snowfall
Snow Line
Fri
21
1cm to 2cm New Snow
Heavy snow showers, light snow, fog later.
Snow falling to resort level.
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.
Mammoth Mountain Snow Forecast updated at 19:33 NZDT, next update expected imminently.
Snow Forecast near Mammoth Mountain
| Ski Area | 48 Hr | 7 Day | Sa | Su | Mo | Tu | We | Th | Fr |
|---|---|---|---|---|---|---|---|---|---|
| June Mountain | 12cm | 14cm |
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.