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Summit Lake, ID Weather Forecast
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Summit Lake Weather Forecast
| TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  |  |  | | |  | | | |  |  |
| Chance of T-Storm | Chance of T-Storm | Patchy Fog | Sunny | Fog | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy |
| Lo: 47°FLo: 8°C | Hi: 68°FHi: 20°C | Lo: 46°FLo: 8°C | Hi: 73°FHi: 23°C | Lo: 49°FLo: 9°C | Hi: 74°FHi: 23°C | Hi: 75°FHi: 24°C Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C Lo: 49°FLo: 9°C | Hi: 73°FHi: 23°C Lo: 51°FLo: 11°C | Hi: 73°FHi: 23°C Lo: 51°FLo: 11°C |
| POP: 80% | POP: 60% |
POP = Probability of Precipitation.
Weather Outlook Updated: 230 PM MDT Fri Sep 18 2026 
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Issued: 217 PM MDT Fri Sep 18 2026
Key Messages
- Numerous showers, isolated-to-scattered thunderstorms, and cooler temperatures today. Strongest thunderstorms in central Idaho with gusty outflow winds, hail, and brief heavy rain.
- Showers and thunderstorms continue tonight and tomorrow over the central Idaho mountains.
- Gradual warming and drying trend beginning Saturday and continuing through early next week.
Aviation
/18Z Friday through Saturday/... Issued 1138 AM MDT FRI SEP 18 2026 VFR in eastern Oregon. Mainly VFR in southwest Ida...