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City of Sun Valley, IdahoSun Valley, ID Weather Forecast
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Sun Valley Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY | MONDAY | MONDAY NIGHT | TUESDAY |
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| Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear |
| Hi: 67°FHi: 19°C | Lo: 42°FLo: 6°C | Hi: 71°FHi: 22°C | Lo: 46°FLo: 8°C | Hi: 70°FHi: 21°C | Hi: 61°FHi: 16°C Lo: 39°FLo: 4°C | Hi: 61°FHi: 16°C Lo: 39°FLo: 4°C | Hi: 61°FHi: 16°C Lo: 39°FLo: 4°C | Hi: 61°FHi: 16°C Lo: 39°FLo: 4°C | Hi: 59°FHi: 15°C Lo: 35°FLo: 2°C | Hi: 59°FHi: 15°C Lo: 35°FLo: 2°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1231 AM MDT Wed Sep 23 2026 
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Issued: 518 AM MDT Wed Sep 23 2026
Key Messages
- Warmer temperatures through Friday with well above normal conditions Thursday and Friday.
- Breezy to windy Friday afternoon followed by cooler weather this weekend with some potential for showers and storms Sunday and Monday.
Discussion
... Issued at 239 AM MDT Wed Sep 23 2026
Upper level trof which brought the showers and isolated thunderstorms yesterday continues to push rapidly east. Will have much drier and warmer conditions today with skies becoming sunny after some patchy fog this ...