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Sun Valley Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | FRIDAY |
 |  |  |  |  |  |  | | | | |
| Partly Cloudy | Partly Cloudy | Cloudy | Chance of Showers | Chance of Showers | Clear | Clear | Clear | Clear | Clear | Clear |
| Hi: 80°FHi: 27°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 49°FLo: 9°C | Hi: 73°FHi: 23°C | Lo: 47°FLo: 8°C | Hi: 78°FHi: 26°C Lo: 49°FLo: 9°C | Hi: 78°FHi: 26°C Lo: 49°FLo: 9°C | Hi: 83°FHi: 28°C Lo: 51°FLo: 11°C | Hi: 83°FHi: 28°C Lo: 51°FLo: 11°C | Hi: 83°FHi: 28°C Lo: 51°FLo: 11°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 231 AM PDT Sat Sep 26 2026 
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Issued: 108 AM PDT Sat Sep 26 2026
Key Messages
- A system will bring cooler temperatures with highs dropping between 5 to 10 degrees below average by Sunday and Monday.
- 20-50% chance for rain and light high elevation snow showers (>9,000`) across the eastern Sierra and western Nevada Sunday night into Monday afternoon.
- Ridge returns to the area Tuesday, leading to a warming and drying trend through next weekend.
Discussion
...
The system that produced strong winds across the region on Friday has moved into the northern Rockies. We are...