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Guitar Lake Weather Forecast
| TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
 |  | | | | | | | |  |  | |
| Sunny | Clear | Sunny | Clear | Sunny | Clear | Clear | Mostly Clear | Mostly Clear | Chance of Rain | Chance of Showers | Chance of Rain |
| Hi: 59°FHi: 15°C | Lo: 39°FLo: 4°C | Hi: 57°FHi: 14°C | Lo: 41°FLo: 5°C | Hi: 59°FHi: 15°C | Hi: 59°FHi: 15°C Lo: 41°FLo: 5°C | Hi: 59°FHi: 15°C Lo: 41°FLo: 5°C | Hi: 60°FHi: 16°C Lo: 42°FLo: 6°C | Hi: 60°FHi: 16°C Lo: 42°FLo: 6°C | Lo: 44°FLo: 7°C | Hi: 59°FHi: 15°C | Lo: 45°FLo: 7°C |
| POP: 40% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 310 AM PDT Tue Sep 01 2026 
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Issued: 1025 PM PDT Mon Aug 31 2026
Key Messages
1. Below Seasonal Average Temperatures will exist across the region through the weekend. A slow rise in temperatures begins near the middle of next week.
2. Precipitation chances increase by this weekend with the best chances of precipitation early next week.
Discussion
... Upper Level Disturbance pushing through the West Coast over the next 24 hours will usher in much cooler conditions. While cooler conditions were felt this Monday, even cooler conditions will be observed on Tuesday as...