Big Sky Snow Forecast - 7 day
Updated 20 September 2026 11:56 PDT
7-Day Snow Forecast for Big Sky
1-week from 20 September.
For Forecast detail, see below.
J2Ski - Sign In for a long-range snow forecast, with more weather detail.
Big Sky 7-Day Snow Forecast Highlights
When will there be fresh snow in Big Sky?
| Next Snow? | |
|---|---|
| There is no snow currently in the forecast for Big Sky. |
7-Day Snow Outlook for Big Sky
Snowfall
Snow Line
Max 70°F
Min 40°F
Snow unlikely
J2Ski - Sign In for a long-range snow forecast, with more weather detail.
Partner Offers
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 60°F
Min 42°F
Valley temperatures from an overnight low of 42°F to daytime highs around 60°F
Freeze-thaw conditions up high.
Temperature at BaseTemp at Base
Sun
20
Snow unlikely
Cloudy early, then fair later.
Forecast times for Big Sky are in Denver (US/Mountain) time zone.
Max 69°F
Min 41°F
Valley temperatures from an overnight low of 41°F to daytime highs around 69°F
Freeze-thaw conditions up high.
Temperature at BaseTemp at Base
Mon
21
Snow unlikely
Clear sky.
Forecast times for Big Sky are in Denver (US/Mountain) time zone.
Max 68°F
Min 44°F
Valley temperatures from an overnight low of 44°F to daytime highs around 68°F
Freeze-thaw conditions up high.
Temperature at BaseTemp at Base
Tue
22
Snow unlikely
Clear sky early, then cloudy later.
Forecast times for Big Sky are in Denver (US/Mountain) time zone.
Max 67°F
Min 45°F
Valley temperatures from an overnight low of 45°F to daytime highs around 67°F
Freeze-thaw conditions up high.
Temperature at BaseTemp at Base
Wed
23
Snow unlikely
Light drizzle, cloudy, clear sky later.
Forecast times for Big Sky are in Denver (US/Mountain) time zone.
Max 70°F
Min 47°F
Valley temperatures from an overnight low of 47°F to daytime highs around 70°F
Temperature at BaseTemp at Base
Thu
24
Snow unlikely
Cloudy early, then clear sky later.
Forecast times for Big Sky are in Denver (US/Mountain) time zone.
Max 70°F
Min 45°F
Valley temperatures from an overnight low of 45°F to daytime highs around 70°F
Freeze-thaw conditions up high.
Temperature at BaseTemp at Base
Fri
25
Snow unlikely
Clear sky, cloudy, clear sky later.
Forecast times for Big Sky are in Denver (US/Mountain) time zone.
Max 62°F
Min 40°F
Valley temperatures from an overnight low of 40°F to daytime highs around 62°F
Freeze-thaw conditions up high.
Temperature at BaseTemp at Base
Sat
26
Snow unlikely
Clear spells early, then cloudy later.
Forecast times for Big Sky are in Denver (US/Mountain) time zone.
No significant snowfall is forecast for this period.
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 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.
Big Sky Snow Forecast updated at 11:56 PDT, next update expected imminently.
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.