Big Sky 48-Hour Snow Forecast
48-hour Forecast for Big Sky (6,791ft to 11,188ft)
This is the 48-hour (2-Day) Snow Forecast for Big Sky, United States for 2 days from 18 May.
Updated 18 May 2025 09:33 PDT.
Big Sky has 2in new snow forecast in the next 48 hours.
See below for the detailed Weather and Snow outlook.
Big Sky Snow Forecast updated at 09:33 PDT, next update expected imminently.
To get this forecast by e-mail Join J2Ski's Snow Mail Here
Forecast for today in Big Sky
Max 49°F
Min 38°F
Valley temperatures from an overnight low of 38°F to daytime highs around 49°F
Freeze-thaw (spring snow) from mid-mountain up.
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Sun
18
up to 1in New Snow
Cloudy early, then light drizzle later.
Snow Line from 8,133ft to 7,740ft, with rain below.
Big Sky has 2in new snow forecast in the next 48 hours.
Forecast for tomorrow in Big Sky
Max 52°F
Min 30°F
Valley temperatures from an overnight low of 30°F to daytime highs around 52°F
Freeze-thaw (spring snow) from mid-mountain up.
Temperature at BaseTemp at Base
Mon
19
Snow unlikely
Cloudy early, then clear sky later.
48-hour Forecast Detail
| Base | Snow to | Weather | Temp Town | Rain or Snow? | |||
|---|---|---|---|---|---|---|---|
| Sun | 00:00 | | Cloudy. | 49°F | SW Breeze | 25% | |
| Sun | 01:00 | | Cloudy. | 46°F | SW Breeze | 20% | |
| Sun | 02:00 | | Cloudy. | 45°F | SW Breeze | 15% | |
| Sun | 03:00 | | Fog at altitude. Cloud below. | 44°F | SW Breeze | 20% | |
| Sun | 04:00 | | Cloudy. | 44°F | SW Light | 25% | |
| Sun | 05:00 | | Cloudy. | 43°F | SW Light | 20% | |
| Sun | 06:00 | | Cloudy. | 42°F | SW Light | 20% | |
| Sun | 07:00 | | Fog at altitude. Cloud below. | 43°F | SW Light | 10% | |
| Sun | 08:00 | | Fog at altitude. Cloud below. | 43°F | SW Light | 20% | |
| Sun | 09:00 | | Fog at altitude. Cloud below. | 43°F | SW Light | 15% | |
| Sun | 10:00 | | Fog at altitude. Cloud below. | 40°F | SW Light | 15% | |
| Sun | 11:00 | | Cloudy. | 41°F | SW Breeze | 20% | |
| Sun | 12:00 | | Fog at altitude. Cloud below. | 38°F | SW Breeze | 15% | |
| Sun | 13:00 | | Fog at altitude. Cloud below. | 39°F | SW Breeze | 20% | |
| Sun | 14:00 | | Fog at altitude. Cloud below. | 40°F | SW Breeze | 30% | |
| Sun | 15:00 | | Fog at altitude. Cloud below. | 40°F | SW Light | 25% | |
| Sun | 16:00 | | Cloudy. | 41°F | SW Breeze | 40% | |
| Sun | 17:00 | | Cloudy. | 43°F | SW Breeze | 40% | |
| Sun | 18:00 |  | up to 1in New Snow | Heavy snow at altitude. Hvy rain below. | 41°F | SW Breeze | 40% |
| Sun | 19:00 |  | Heavy snow showers at altitude. Hvy shwrs below. | 43°F | SW Breeze | 40% | |
| Sun | 20:00 | | Cloudy. | 43°F | SW Breeze | 40% | |
| Sun | 21:00 | | New Snow | Heavy snow showers at altitude. Hvy shwrs below. | 43°F | SW Breeze | 60% |
| Sun | 22:00 | | New Snow | Heavy snow showers at altitude. Hvy shwrs below. | 45°F | SW Breeze | 55% |
| Sun | 23:00 | | Heavy snow showers at altitude. Hvy shwrs below. | 45°F | SW Strong | 45% | |
| Mon | 00:00 | | Cloudy. | 42°F | S Breeze | 45% | |
| Mon | 01:00 | | Cloudy. | 40°F | S Breeze | 45% | |
| Mon | 02:00 | | Cloudy. | 38°F | S Breeze | 40% | |
| Mon | 03:00 | | Cloudy. | 37°F | S Breeze | 45% | |
| Mon | 04:00 | | Cloudy. | 35°F | S Breeze | 35% | |
| Mon | 05:00 | | Cloudy. | 33°F | S Breeze | 20% | |
| Mon | 06:00 | | Cloudy. | 33°F | S Breeze | 10% | |
| Mon | 07:00 | | Fog at altitude. Cloud below. | 32°F | S Breeze | 5% | |
| Mon | 08:00 | | Cloudy. | 32°F | S Breeze | 5% | |
| Mon | 09:00 | | Cloudy. | 32°F | S Breeze | 5% | |
| Mon | 10:00 | | Cloudy. | 33°F | S Breeze | 0% | |
| Mon | 11:00 | | Fair at altitude. Cloud below. | 32°F | S Breeze | 0% | |
| Mon | 12:00 |  | Clear sky at altitude. Mixed below. | 30°F | S Breeze | 0% | |
| Mon | 13:00 | | Clear sky. | 31°F | S Breeze | 0% | |
| Mon | 14:00 | | Clear sky. | 34°F | S Breeze | 0% | |
| Mon | 15:00 | | Clear sky. | 37°F | S Breeze | 0% | |
| Mon | 16:00 | | Clear sky. | 39°F | S Breeze | 0% | |
| Mon | 17:00 | | Clear sky. | 42°F | S Breeze | 0% | |
| Mon | 18:00 | | Clear sky. | 44°F | S Breeze | 0% | |
| Mon | 19:00 | | Clear sky. | 47°F | S Breeze | 0% | |
| Mon | 20:00 | | Clear sky. | 49°F | S Breeze | 0% | |
| Mon | 21:00 | | Clear sky. | 50°F | S Breeze | 0% | |
| Mon | 22:00 | | Clear sky. | 51°F | S Breeze | 0% | |
| Mon | 23:00 | | Clear sky. | 52°F | S Breeze | 0% | |
Snow Forecast near Big Sky
| Snow Report and Forecast | 48 Hr | Sun | Mon | Tue | Wed | Thu | Fri | Sat | 7 Day |
|---|---|---|---|---|---|---|---|---|---|
| Moonlight Basin | 3in | 4in |
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 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.