Big Sky 48-Hour Snow Forecast
Updated 18 September 2026 00:47 CDT
2-Day Forecast for Big Sky
48-hours from 18 September.
See below for forecast detail
Big Sky Snow Forecast updated at 00:47 CDT, next update expected imminently.
Forecast for today in Big Sky
Max 21℃
Min 8℃
Valley temperatures from an overnight low of 8℃ to daytime highs around 21℃
Temperature at BaseTemp at Base
Fri
18
Snow unlikely
Cloudy.
Forecast times for Big Sky are in Denver (US/Mountain) time zone.
Forecast for tomorrow in Big Sky
Max 12℃
Min 8℃
Valley temperatures from an overnight low of 8℃ to daytime highs around 12℃
Temperature at BaseTemp at Base
Snowfall
Snow Line
Sat
19
Snow unlikely
Cloudy.
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? | |||
|---|---|---|---|---|---|---|---|
| Fri | 00:00 | | Cloudy. | 9℃ | SE Light | 0% | |
| Fri | 01:00 | | Cloudy. | 10℃ | SE Light | 0% | |
| Fri | 02:00 | | Cloudy. | 10℃ | SE Light | 0% | |
| Fri | 03:00 | | Cloudy. | 10℃ | SE Light | 5% | |
| Fri | 04:00 | | Cloudy. | 10℃ | SE Breeze | 10% | |
| Fri | 05:00 | | Cloudy. | 10℃ | SE Breeze | 20% | |
| Fri | 06:00 | | Cloudy. | 9℃ | SE Breeze | 25% | |
| Fri | 07:00 | | Cloudy. | 9℃ | SE Light | 35% | |
| Fri | 08:00 | | Fair at altitude. Cloud below. | 8℃ | SE Light | 15% | |
| Fri | 09:00 | | Cloudy. | 11℃ | SE Light | 5% | |
| Fri | 10:00 | | Cloudy. | 14℃ | SE Light | 5% | |
| Fri | 11:00 | | Cloudy. | 17℃ | SE Light | 5% | |
| Fri | 12:00 | | Cloudy. | 18℃ | SE Light | 10% | |
| Fri | 13:00 |  | Light snow at altitude. Lt drizzle below. | 15℃ | SE Breeze | 15% | |
| Fri | 14:00 | | Cloudy. | 15℃ | SE Breeze | 25% | |
| Fri | 15:00 | | Cloudy. | 16℃ | SE Breeze | 35% | |
| Fri | 16:00 | | Cloudy. | 17℃ | SE Breeze | 25% | |
| Fri | 17:00 | | Cloudy. | 21℃ | SE Light | 25% | |
| Fri | 18:00 | | Cloudy. | 19℃ | SE Light | 30% | |
| Fri | 19:00 | | Cloudy. | 17℃ | SE Light | 20% | |
| Fri | 20:00 | | Heavy snow showers at altitude. Hvy shwrs below. | 15℃ | SE Breeze | 20% | |
| Fri | 21:00 |  | Heavy snow at altitude. Rain below. | 12℃ | SE Breeze | 35% | |
| Fri | 22:00 | | Snow at altitude. Drizzle below. | 11℃ | SE Breeze | 45% | |
| Fri | 23:00 | | Cloudy. | 10℃ | SE Breeze | 45% | |
| Sat | 00:00 | | Cloudy. | 10℃ | SW Light | 30% | |
| Sat | 01:00 | | Cloudy. | 10℃ | SW Light | 20% | |
| Sat | 02:00 | | Cloudy. | 10℃ | SW Light | 25% | |
| Sat | 03:00 | | Light snow at altitude. Lt rain below. | 9℃ | SW Light | 30% | |
| Sat | 04:00 |  | Cloudy at altitude. Mixed below. | 9℃ | SW Light | 20% | |
| Sat | 05:00 | | Fog at altitude. Cloud below. | 9℃ | SW Light | 20% | |
| Sat | 06:00 | | Cloudy. | 9℃ | SW Calm | 20% | |
| Sat | 07:00 | | Clear spells at altitude. Cloud below. | 9℃ | SW Light | 20% | |
| Sat | 08:00 | | Fog at altitude. Mixed below. | 9℃ | SW Light | 20% | |
| Sat | 09:00 | | Cloudy. | 10℃ | SW Light | 20% | |
| Sat | 10:00 | | Cloudy. | 10℃ | SW Light | 25% | |
| Sat | 11:00 | | Cloudy. | 11℃ | SW Breeze | 65% | |
| Sat | 12:00 |  | Cloudy at altitude. Hvy drizzle below. | 10℃ | SW Breeze | 65% | |
| Sat | 13:00 | | Light snow at altitude. Lt rain below. | 11℃ | SW Breeze | 90% | |
| Sat | 14:00 | | Heavy snow showers at altitude. Hvy shwrs below. | 11℃ | SW Breeze | 90% | |
| Sat | 15:00 | | Cloudy. | 12℃ | SW Breeze | 90% | |
| Sat | 16:00 | | Clear spells at altitude. Cloud below. | 11℃ | SW Light | 90% | |
| Sat | 17:00 | | Cloudy. | 11℃ | SW Light | 90% | |
| Sat | 18:00 | | Fog at altitude. Cloud below. | 9℃ | SW Light | 90% | |
| Sat | 19:00 | | Light snow at altitude. Lt drizzle below. | 9℃ | SW Calm | 80% | |
| Sat | 20:00 | | Light snow at altitude. Lt drizzle below. | 8℃ | SW Calm | 80% | |
| Sat | 21:00 | | Light snow at altitude. Lt drizzle below. | 8℃ | SW Calm | 80% | |
| Sat | 22:00 | | Light snow at altitude. Lt drizzle below. | 8℃ | SW Light | 80% | |
| Sat | 23:00 | | Light snow at altitude. Lt drizzle below. | 8℃ | SW Light | 80% | |
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.
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.
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.