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Bill Lake Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | THURSDAY | THURSDAY NIGHT | FRIDAY |
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| Sunny | Mostly Clear | Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy |
| Hi: 71°FHi: 22°C | Lo: 52°FLo: 11°C | Hi: 72°FHi: 22°C | Lo: 53°FLo: 12°C | Hi: 70°FHi: 21°C | Hi: 70°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C Lo: 51°FLo: 11°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 310 AM PDT Sat Aug 22 2026 
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Bill Lake Forecast Discussion
Issued: 433 AM PDT Sat Aug 22 2026
Key Messages
1. Triple digit heat continues for San Joaquin Valley and Mojave Desert.
2. Monsoonal moisture brings 10 to 20 percent chance of thunderstorms over the Sierra Nevada this afternoon.
3. 20-40% probability for extreme heat ending next week and starting September.
Discussion
... Today`s temperatures ranged from average to 5 degrees above, with the San Joaquin River serving as the invisible dividing line from north to south respectively. The latest National Blend of Models (NBM) run at 1Z Sa...