Sun Valley 48-Hour Snow Forecast
Updated 20 September 2026 19:55 AEST
2-Day Forecast for Sun Valley
48-hours from 20 September.
See below for forecast detail
Sun Valley Snow Forecast updated at 19:55 AEST, next update expected imminently.
Forecast for today in Sun Valley
Max 20℃
Min 7℃
Valley temperatures from an overnight low of 7℃ to daytime highs around 20℃
Temperature at BaseTemp at Base
Sun
20
Snow unlikely
Fair early, then clear sky later.
Forecast times for Sun Valley are in Denver (US/Mountain) time zone.
Forecast for tomorrow in Sun Valley
Max 22℃
Min 8℃
Valley temperatures from an overnight low of 8℃ to daytime highs around 22℃
Temperature at BaseTemp at Base
Mon
21
Snow unlikely
Clear sky.
Forecast times for Sun Valley are in Denver (US/Mountain) time zone.
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Partner Offers
48-hour Forecast Detail
| Base | Snow to | Weather | Temp Town | Rain or Snow? | |||
|---|---|---|---|---|---|---|---|
| Sun | 00:00 |  | Clear sky at altitude. Fair below. | 8℃ | SW Light | 0% | |
| Sun | 01:00 | | Clear sky. | 8℃ | SW Light | 0% | |
| Sun | 02:00 | | Clear sky. | 7℃ | SW Light | 0% | |
| Sun | 03:00 | | Clear sky. | 7℃ | SW Light | 0% | |
| Sun | 04:00 | | Clear sky. | 7℃ | SW Light | 0% | |
| Sun | 05:00 | | Clear sky. | 7℃ | SW Light | 0% | |
| Sun | 06:00 | | Clear sky. | 7℃ | SW Light | 0% | |
| Sun | 07:00 | | Clear sky. | 7℃ | SW Light | 0% | |
| Sun | 08:00 | | Clear sky. | 7℃ | SW Calm | 0% | |
| Sun | 09:00 | | Clear sky. | 9℃ | SW Light | 0% | |
| Sun | 10:00 | | Clear sky. | 11℃ | SW Light | 0% | |
| Sun | 11:00 | | Clear sky. | 13℃ | SW Light | 0% | |
| Sun | 12:00 | | Clear sky. | 15℃ | SW Light | 0% | |
| Sun | 13:00 | | Clear sky. | 16℃ | SW Light | 0% | |
| Sun | 14:00 | | Clear sky. | 18℃ | SW Light | 0% | |
| Sun | 15:00 | | Clear sky. | 19℃ | SW Light | 0% | |
| Sun | 16:00 | | Clear sky. | 20℃ | SW Light | 0% | |
| Sun | 17:00 | | Clear sky at altitude. Mixed below. | 20℃ | SW Light | 0% | |
| Sun | 18:00 | | Fair at altitude. Mixed below. | 20℃ | SW Light | 5% | |
| Sun | 19:00 | | Clear sky. | 18℃ | SW Light | 0% | |
| Sun | 20:00 | | Clear sky at altitude. Fair below. | 15℃ | SW Breeze | 0% | |
| Sun | 21:00 | | Clear sky. | 14℃ | SW Light | 0% | |
| Sun | 22:00 | | Clear sky. | 13℃ | SW Light | 0% | |
| Sun | 23:00 | | Clear sky. | 12℃ | SW Light | 0% | |
| Mon | 00:00 | | Clear sky. | 12℃ | SW Light | 0% | |
| Mon | 01:00 | | Clear sky. | 11℃ | SW Calm | 0% | |
| Mon | 02:00 | | Clear sky. | 10℃ | SW Calm | 0% | |
| Mon | 03:00 | | Clear sky. | 10℃ | SW Light | 0% | |
| Mon | 04:00 | | Clear sky. | 10℃ | SW Light | 0% | |
| Mon | 05:00 | | Clear sky. | 9℃ | SW Light | 0% | |
| Mon | 06:00 | | Clear sky. | 8℃ | SW Light | 0% | |
| Mon | 07:00 | | Clear sky. | 8℃ | SW Light | 0% | |
| Mon | 08:00 | | Clear sky. | 8℃ | SW Light | 0% | |
| Mon | 09:00 | | Clear sky. | 11℃ | SW Light | 0% | |
| Mon | 10:00 | | Clear sky. | 14℃ | SW Light | 0% | |
| Mon | 11:00 | | Clear sky. | 16℃ | SW Light | 0% | |
| Mon | 12:00 | | Clear sky. | 18℃ | SW Light | 0% | |
| Mon | 13:00 | | Clear sky. | 20℃ | SW Light | 0% | |
| Mon | 14:00 | | Clear sky. | 21℃ | SW Light | 0% | |
| Mon | 15:00 | | Clear sky. | 22℃ | SW Light | 0% | |
| Mon | 16:00 |  | Cloudy. | 22℃ | SW Light | 0% | |
| Mon | 17:00 | | Cloudy. | 22℃ | SW Light | 0% | |
| Mon | 18:00 | | Cloudy. | 21℃ | SW Light | 0% | |
| Mon | 19:00 | | Cloudy. | 19℃ | SW Light | 0% | |
| Mon | 20:00 | | Cloudy. | 16℃ | SW Breeze | 0% | |
| Mon | 21:00 | | Cloudy. | 15℃ | SW Light | 0% | |
| Mon | 22:00 | | Cloudy. | 15℃ | SW Light | 0% | |
| Mon | 23:00 | | Cloudy. | 14℃ | SW Light | 0% | |
Snow Forecast near Sun Valley
Snow forecasts for nearby ski areas.
Snow Forecasts for other Ski Resorts near Sun Valley are not available.
Sun Valley Snow
For current snow depths and skiing conditions, see our Current Snow Report for Sun Valley.
No significant snowfall is forecast for this period.
This Snow Forecast for Sun Valley, 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 Sun Valley, 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
Sun Valley typically enjoys a healthy snowpack, with average depths reaching up to 100 inches during the season. The resort's snow reliability is bolstered by consistent snowfall, making it essential to check J2Ski for the latest updates on conditions.