Big Sky Snow Report and Forecast
Snow Forecast for Big Sky
This is the Snow Forecast for Big Sky, United States for 16 days from 15 November.
Updated 15 November 2025 14:35 UTC.
For Forecast detail, see below.
For current snow depths and skiing conditions, see our Current Snow Report for Big Sky.
J2Ski - Sign In to see the full long-range snow forecast (out to 16 days, with more weather detail).
Big Sky Snow Forecast Highlights
When will there be fresh snow in Big Sky?
| Next Snow Expected | 17 November |
|---|---|
| Next Snow Amount | 4cm 2in |
| Next 48 Hours | 4cm 2in |
| Next 7 Days | 5cm 2in |
Forecast for today in Big Sky
Max 10℃ 49°F
Min 3℃ 38°F
Valley temperatures from an overnight low of 3℃ 38°F to daytime highs around 10℃ 49°F
Temperature at BaseTemp at Base
Sat
15
Snow unlikely
Clear sky, cloudy, clear sky later.
Big Sky has 4cm 2in new snow forecast in the next 48 hours.
Big Sky Snow Report
| Upper Snow Depths |
| - |
| Lower Snow Depths |
| - |
| Snow Conditions |
| - |
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Big Sky 7-Day Snow Forecast Overview
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| Sat 15 | Sun 16 | Mon 17 | Tue 18 | Wed 19 | Thu 20 | Fri 21 | |
|---|---|---|---|---|---|---|---|
| Wind | W F4 | SW F3 | SW F2 | ||||
| 3,410m 11,188ft | -1℃ 30°F
| 0℃ 31°F
| -3℃ 26°F
 +4cm +2in
| -3℃ 27°F
| -5℃ 23°F
+1cm
| -3℃ 27°F
 | -3℃ 27°F
|
| NW F4 | S F2 | ||||||
| 2,740m 8,990ft | 3℃ 38°F
| 4℃ 39°F
| 1℃ 33°F
+4cm +2in
| 2℃ 35°F
| 0℃ 31°F
+1cm
| 2℃ 35°F
| 1℃ 35°F
|
| NW F2 | |||||||
| 2,070m 6,791ft | 10℃ 49°F
| 10℃ 50°F
| 6℃ 43°F
+1cm
| 6℃ 42°F
 | 2℃ 36°F
+1cm
| 7℃ 44°F
| 6℃ 42°F
|
| Snow Line | varying 2,479m 8,133ft | 2,070m 6,791ft | 2,070m 6,791ft | ||||
| Max Town | 10℃ 49°F | 10℃ 50°F | 6℃ 43°F | 6℃ 42°F | 2℃ 36°F | 7℃ 44°F | 6℃ 42°F |
| Min Town | 3℃ 38°F | 3℃ 37°F | 1℃ 33°F | -2℃ 28°F | 0℃ 31°F | -3℃ 26°F | -3℃ 27°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.
Big Sky 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 10℃ 49°F
Min 3℃ 38°F
Valley temperatures from an overnight low of 3℃ 38°F to daytime highs around 10℃ 49°F
Temperature at BaseTemp at Base
Sat
15
Snow unlikely
Clear sky, cloudy, clear sky later.
Max 10℃ 50°F
Min 3℃ 37°F
Valley temperatures from an overnight low of 3℃ 37°F to daytime highs around 10℃ 50°F
Temperature at BaseTemp at Base
Sun
16
Snow unlikely
Cloudy.
Max 6℃ 43°F
Min 1℃ 33°F
Valley temperatures from an overnight low of 1℃ 33°F to daytime highs around 6℃ 43°F
Temperature at BaseTemp at Base
Snowfall
Snow Line
Mon
17
1cm to 4cm up to 2in New Snow
Cloudy first, snow showers then light snow, cloudy later.
Snow Line from 2,479m 8,133ft to resort level.
Max 6℃ 42°F
Min -2℃ 28°F
Freeze-thaw conditions, with valley temperatures cooling to -2℃ 28°F and rising to 6℃ 42°F
Temperature at BaseTemp at Base
Tue
18
Snow unlikely
Clear sky, clear spells, cloudy later.
Max 2℃ 36°F
Min 0℃ 31°F
Valley temperatures from an overnight low of 0℃ 31°F to daytime highs around 2℃ 36°F
Temperature at BaseTemp at Base
Snowfall
Snow Line
Wed
19
1cm New Snow
Cloudy, snow showers, light snow later.
Snow falling to resort level.
Max 7℃ 44°F
Min -3℃ 26°F
Freeze-thaw conditions, with valley temperatures cooling to -3℃ 26°F and rising to 7℃ 44°F
Temperature at BaseTemp at Base
Snowfall
Snow Line
Thu
20
Snow unlikely
Fog first, cloudy then clear spells, clear sky later.
Max 6℃ 42°F
Min -3℃ 27°F
Freeze-thaw conditions, with valley temperatures cooling to -3℃ 27°F and rising to 6℃ 42°F
Temperature at BaseTemp at Base
Fri
21
Snow unlikely
Clear sky early, then fair later.
This Snow Forecast for Big Sky, 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 Big Sky, 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.
Big Sky Snow Forecast updated at 14:35 UTC, next update expected 17:00 UTC.
Snow Forecast near Big Sky
| Ski Area | 48 Hr | 7 Day | Sa | Su | Mo | Tu | We | Th | Fr |
|---|---|---|---|---|---|---|---|---|---|
| Moonlight Basin | 2cm 1in | 2cm 1in |
Snow Reliability
Big Sky enjoys reliable snow conditions, with an average annual snowfall of over 400 inches. Skiers can expect a solid snow depth throughout the season, but it's advisable to check J2Ski for the latest snow conditions.
Understanding and predicting Snow Conditions in Big Sky
Here are our tips for making the most of a trip to Big Sky, with the help of the J2Ski Snow forecasts and reports. You can find some great skiing in Big Sky, 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 Big Sky 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 Big Sky 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 Big Sky 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.