Weather WorldSummit Lake, WA Weather Forecast
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Summit Lake Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY |
 |  |  |  | |  |  | |  | | |
| Mostly Sunny | Rain | Chance of Rain | Mostly Clear | Mostly Sunny | Mostly Cloudy | Mostly Cloudy | Chance of Showers | Snow Showers | Snow Showers | Snow Showers |
| Hi: 67°FHi: 19°C | Lo: 40°FLo: 4°C | Hi: 56°FHi: 13°C | Lo: 30°FLo: -1°C | Hi: 55°FHi: 13°C | Hi: 55°FHi: 13°C Lo: 30°FLo: -1°C | Hi: 55°FHi: 13°C Lo: 30°FLo: -1°C | Hi: 55°FHi: 13°C | Hi: 53°FHi: 12°C Lo: 30°FLo: -1°C | Hi: 53°FHi: 12°C Lo: 30°FLo: -1°C | Hi: 53°FHi: 12°C Lo: 30°FLo: -1°C |
| POP: 90% | POP: 50% | POP: 20% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 126 AM PDT Thu Oct 22 2026 
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Issued: 124 AM PDT Thu Oct 22 2026
Key Messages
- High confidence for rain across far eastern Washington and northern Idaho Thursday afternoon through Friday morning.
- Dry and windy Friday Okanogan Valley/Highlands, Waterville Plateau, and Upper Columbia Basin leading to elevated fire weather conditions, potential for patchy blowing dust, and isolated tree damage.
- Cooler temperatures Friday into the weekend
Discussion
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Winds tonight into Friday: Wind advisories have been issued for north- central WA for a strong cold front moving in ...