Big Sky 48-Hour Snow Forecast
Updated 20 September 2026 11:56 PDT
2-Day Forecast for Big Sky
48-hours from 20 September.
See below for forecast detail
Big Sky Snow Forecast updated at 11:56 PDT, next update expected imminently.
Forecast for today in Big Sky
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.
Forecast for tomorrow in Big Sky
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.
Partner Offers
Partner Offers
48-hour Forecast Detail
| Base | Snow to | Weather | Temp Town | Rain or Snow? | |||
|---|---|---|---|---|---|---|---|
| Sun | 00:00 | | Cloudy at altitude. Clear below. | 45°F | NW Light | 0% | |
| Sun | 01:00 | | Cloudy. | 44°F | NW Light | 0% | |
| Sun | 02:00 | | Cloudy. | 43°F | NW Light | 0% | |
| Sun | 03:00 | | Cloudy. | 42°F | NW Light | 0% | |
| Sun | 04:00 | | Fog at altitude. Cloud below. | 43°F | NW Breeze | 0% | |
| Sun | 05:00 | | Cloudy. | 44°F | NW Light | 0% | |
| Sun | 06:00 | | Fog at altitude. Cloud below. | 44°F | NW Light | 0% | |
| Sun | 07:00 | | Fog at altitude. Cloud below. | 43°F | NW Breeze | 0% | |
| Sun | 08:00 | | Cloudy. | 44°F | NW Light | 0% | |
| Sun | 09:00 | | Cloudy. | 46°F | NW Light | 0% | |
| Sun | 10:00 | | Fog at altitude. Cloud below. | 48°F | NW Light | 0% | |
| Sun | 11:00 | | Cloudy at altitude. Clear below. | 50°F | NW Light | 0% | |
| Sun | 12:00 |  | Cloudy at altitude. Fair below. | 54°F | NW Light | 0% | |
| Sun | 13:00 | | Cloudy at altitude. Mixed below. | 57°F | NW Breeze | 0% | |
| Sun | 14:00 | | Clear spells at altitude. Cloud below. | 56°F | NW Breeze | 0% | |
| Sun | 15:00 | | Fair at altitude. Mixed below. | 59°F | NW Breeze | 0% | |
| Sun | 16:00 | | Fair. | 60°F | NW Light | 5% | |
| Sun | 17:00 | | Cloudy at altitude. Fair below. | 60°F | NW Light | 0% | |
| Sun | 18:00 | | Clear spells. | 59°F | NW Light | 0% | |
| Sun | 19:00 | | Clear sky. | 57°F | NW Light | 0% | |
| Sun | 20:00 | | Clear sky. | 53°F | NW Light | 0% | |
| Sun | 21:00 | | Clear sky. | 50°F | NW Light | 0% | |
| Sun | 22:00 | | Clear sky. | 49°F | NW Breeze | 0% | |
| Sun | 23:00 | | Clear sky. | 48°F | NW Breeze | 0% | |
| Mon | 00:00 | | Clear sky. | 47°F | SE Breeze | 0% | |
| Mon | 01:00 | | Clear sky. | 46°F | SE Breeze | 0% | |
| Mon | 02:00 | | Clear sky. | 45°F | SE Light | 0% | |
| Mon | 03:00 | | Clear sky. | 44°F | SE Light | 0% | |
| Mon | 04:00 | | Clear sky. | 43°F | SE Light | 0% | |
| Mon | 05:00 | | Clear sky. | 43°F | SE Light | 0% | |
| Mon | 06:00 | | Clear sky. | 42°F | SE Light | 0% | |
| Mon | 07:00 | | Clear sky. | 41°F | SE Light | 0% | |
| Mon | 08:00 | | Clear sky. | 41°F | SE Light | 0% | |
| Mon | 09:00 | | Clear sky. | 47°F | SE Light | 0% | |
| Mon | 10:00 | | Clear sky. | 52°F | SE Light | 0% | |
| Mon | 11:00 | | Clear sky. | 56°F | SE Light | 0% | |
| Mon | 12:00 | | Clear sky. | 61°F | SE Light | 0% | |
| Mon | 13:00 | | Clear sky. | 64°F | SE Light | 0% | |
| Mon | 14:00 | | Clear sky. | 67°F | SE Light | 0% | |
| Mon | 15:00 | | Clear sky. | 68°F | SE Light | 0% | |
| Mon | 16:00 | | Fair at altitude. Clear below. | 69°F | SE Breeze | 0% | |
| Mon | 17:00 | | Clear sky. | 68°F | SE Light | 0% | |
| Mon | 18:00 | | Clear sky. | 67°F | SE Light | 0% | |
| Mon | 19:00 | | Clear sky. | 63°F | SE Light | 0% | |
| Mon | 20:00 | | Clear sky. | 58°F | SE Breeze | 0% | |
| Mon | 21:00 | | Clear sky. | 54°F | SE Light | 0% | |
| Mon | 22:00 | | Clear sky. | 53°F | SE Light | 0% | |
| Mon | 23:00 | | Clear sky. | 53°F | SE Light | 0% | |
Snow Forecast near Big Sky
Snow forecasts for nearby ski areas.
Snow Forecasts for other Ski Resorts near Big Sky are not available.
Big Sky Snow
For current snow depths and skiing conditions, see our Current Snow Report for Big Sky.
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.
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.