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Sun Valley Weather Forecast - 7 to 16 days - 12th September 2026

Sun Valley Weather

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Weather Forecast for Sun Valley (5,741ft to 9,154ft)

Weather Outlook from 12 September.

Sun Valley Forecast

See below for the detailed long-range forecast, including lowest and highest temperatures, sunshine, cloud cover, wind and rain projections.

Sun Valley Weather Forecast updated at 23:47 PDT, next update expected 05:00 PDT.

Long-range Snow Outlook for Sun Valley

 
Snowfall

 
Snow Line

Max 78°F
Min 38°F

Snow unlikely

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Sun Valley Daily Weather Forecast Detail

16 Day Weather and Snow Forecast for Sun Valley from OpenMeteo(GFS)
BaseSnow and WeatherTemp
Town
Sat
12
Cloud

Cloudy.

Max 76°F
Min 49°F
Sun
13
Clear

Clear sky.

Max 64°F
Min 42°F
Mon
14
Clear

Clear sky.

Max 68°F
Min 38°F
Tue
15
Clear

Clear sky.

Max 71°F
Min 41°F
Wed
16
Clear

Clear sky.

Max 73°F
Min 48°F
Thu
17
Fair

Clear spells at altitude, fair below.

Max 72°F
Min 50°F
Fri
18
Clear

Clear sky.

Max 78°F
Min 50°F

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.

Sun Valley Weather Forecast updated at 23:47 PDT, next update expected 05:00 PDT.

Current Snow

For current snow depths and skiing conditions, see our Current Snow Report for Sun Valley.

United States Accommodation (Apartments, Chalets, Hotels) Map

 

For more information about this American Ski Resort, See Also Skiing and Snowboarding in Sun Valley .

Off-Piste Safety in Sun Valley

Before skiing or snowboarding off-piste in Sun Valley, you must assess the local snow conditions. Always check the local Avalanche Risk Level and ski with appropriate safety equipment.