Sun Valley 48-Hour Snow Forecast
48-hour Forecast for Sun Valley (5,741ft to 9,154ft)
This is the 48-hour (2-Day) Snow Forecast for Sun Valley, United States for 2 days from 18 May.
Updated 18 May 2025 07:37 PDT.
Sun Valley has no new snow forecast in the next 48 hours.
See below for the detailed Weather and Snow outlook.
Sun Valley Snow Forecast updated at 07:37 PDT, next update expected imminently.
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Forecast for today in Sun Valley
Max 51°F
Min 39°F
Valley temperatures from an overnight low of 39°F to daytime highs around 51°F
Freeze-thaw conditions up high.
Temperature at BaseTemp at Base
Sun
18
Snow unlikely
Cloudy.
Sun Valley has no new snow forecast in the next 48 hours.
Forecast for tomorrow in Sun Valley
Max 56°F
Min 33°F
Valley temperatures from an overnight low of 33°F to daytime highs around 56°F
Freeze-thaw from mid-mountain up.
Temperature at BaseTemp at Base
Mon
19
Snow unlikely
Clear sky, cloudy, clear sky later.
48-hour Forecast Detail
| Base | Snow to | Weather | Temp Town | Rain or Snow? | |||
|---|---|---|---|---|---|---|---|
| Sun | 00:00 |  | Cloudy at altitude. Mixed below. | 47°F | NW Light | 15% | |
| Sun | 01:00 | | Cloudy at altitude. Fair below. | 48°F | NW Light | 15% | |
| Sun | 02:00 | | Cloudy at altitude. Fair below. | 47°F | NW Light | 20% | |
| Sun | 03:00 | | Cloudy. | 46°F | NW Light | 20% | |
| Sun | 04:00 | | Clear sky at altitude. Cloud below. | 45°F | NW Light | 15% | |
| Sun | 05:00 | | Clear spells. | 42°F | NW Light | 5% | |
| Sun | 06:00 | | Cloudy. | 42°F | NW Light | 5% | |
| Sun | 07:00 | | Fair at altitude. Cloud below. | 42°F | NW Light | 5% | |
| Sun | 08:00 | | Cloudy. | 42°F | NW Light | 5% | |
| Sun | 09:00 | | Fair. | 41°F | NW Light | 10% | |
| Sun | 10:00 | | Cloudy. | 40°F | NW Light | 15% | |
| Sun | 11:00 | | Cloudy. | 39°F | NW Light | 20% | |
| Sun | 12:00 | | Cloudy. | 40°F | NW Breeze | 20% | |
| Sun | 13:00 | | Cloudy. | 41°F | NW Breeze | 30% | |
| Sun | 14:00 | | Cloudy. | 44°F | NW Breeze | 30% | |
| Sun | 15:00 | | Cloudy. | 46°F | NW Breeze | 25% | |
| Sun | 16:00 | | Cloudy. | 48°F | NW Breeze | 10% | |
| Sun | 17:00 | | Cloudy. | 47°F | NW Breeze | 5% | |
| Sun | 18:00 | | Cloudy. | 48°F | NW Breeze | 5% | |
| Sun | 19:00 | | Cloudy. | 49°F | NW Breeze | 5% | |
| Sun | 20:00 | | Cloudy. | 50°F | NW Breeze | 5% | |
| Sun | 21:00 | | Fair at altitude. Mixed below. | 51°F | NW Breeze | 5% | |
| Sun | 22:00 | | Cloudy. | 50°F | NW Breeze | 5% | |
| Sun | 23:00 | | Fair at altitude. Clear below. | 51°F | NW Breeze | 5% | |
| Mon | 00:00 | | Clear sky. | 50°F | SW Breeze | 0% | |
| Mon | 01:00 | | Clear sky. | 47°F | SW Breeze | 0% | |
| Mon | 02:00 | | Clear sky. | 44°F | SW Breeze | 0% | |
| Mon | 03:00 | | Clear sky. | 40°F | SW Breeze | 0% | |
| Mon | 04:00 | | Clear sky. | 38°F | SW Breeze | 0% | |
| Mon | 05:00 | | Clear sky. | 36°F | SW Breeze | 5% | |
| Mon | 06:00 | | Clear sky. | 35°F | SW Breeze | 5% | |
| Mon | 07:00 | | Clear sky at altitude. Cloud below. | 34°F | SW Breeze | 0% | |
| Mon | 08:00 | | Clear sky at altitude. Cloud below. | 36°F | SW Breeze | 0% | |
| Mon | 09:00 | | Clear sky at altitude. Cloud below. | 35°F | SW Breeze | 0% | |
| Mon | 10:00 | | Clear sky at altitude. Cloud below. | 35°F | SW Breeze | 0% | |
| Mon | 11:00 | | Clear sky at altitude. Mixed below. | 33°F | SW Breeze | 0% | |
| Mon | 12:00 | | Clear sky at altitude. Fair below. | 33°F | SW Breeze | 0% | |
| Mon | 13:00 | | Clear sky. | 33°F | SW Breeze | 0% | |
| Mon | 14:00 | | Clear sky. | 36°F | SW Light | 0% | |
| Mon | 15:00 | | Clear sky. | 39°F | SW Breeze | 0% | |
| Mon | 16:00 | | Clear sky. | 42°F | SW Breeze | 0% | |
| Mon | 17:00 | | Clear sky. | 44°F | SW Breeze | 0% | |
| Mon | 18:00 | | Clear sky. | 47°F | SW Light | 0% | |
| Mon | 19:00 | | Clear sky. | 50°F | SW Light | 0% | |
| Mon | 20:00 | | Clear sky. | 53°F | SW Light | 0% | |
| Mon | 21:00 | | Clear sky. | 55°F | SW Light | 0% | |
| Mon | 22:00 | | Clear sky. | 56°F | SW Light | 0% | |
| Mon | 23:00 | | Clear sky. | 56°F | SW Breeze | 0% | |
Snow Forecast near Sun Valley
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.