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Sinclair Lake Weather Forecast
| REST OF TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | THURSDAY | FRIDAY |
 |  |  | | |  |  | | |  | |
| Mostly Cloudy | Partly Cloudy | Rain | Rain | Rain | Chance of Rain | Patchy Fog | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear |
| Lo: 45°FLo: 7°C | Hi: 70°FHi: 21°C | Lo: 47°FLo: 8°C | Hi: 55°FHi: 13°C | Lo: 43°FLo: 6°C | Hi: 60°FHi: 16°C | Lo: 43°FLo: 6°C | Hi: 66°FHi: 19°C Lo: 45°FLo: 7°C | Hi: 66°FHi: 19°C Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C Lo: 45°FLo: 7°C |
| POP: 70% | POP: 100% | POP: 100% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1133 PM PDT Fri Sep 11 2026 
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Issued: 1119 PM PDT Fri Sep 11 2026
Key Messages
- Widespread rain returns late Saturday night through Sunday. Most of the Inland Northwest has at least a 70% chance of receiving half an inch or more of rain with this system.
- Small risk for debris flows and rock slides in Central Washington near sensitive burn scars and steep terrain.
- Isolated thunderstorms Saturday night into Sunday, especially for Eastern Washington and North Idaho.
- Warming and drying trend Monday through Friday with temperatures rebounding into the 70s-80s by the ...