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Tyson Lake, CA Weather Forecast
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Tyson Lake Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | MONDAY | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
 |  | | |  | | |  | | | | |
| Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Partly Cloudy | Mostly Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Lo: 66°FLo: 19°C | Hi: 89°FHi: 32°C | Lo: 61°FLo: 16°C | Hi: 76°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 73°FHi: 23°C | Hi: 79°FHi: 26°C Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C Lo: 59°FLo: 15°C | Hi: 66°FHi: 19°C | Hi: 66°FHi: 19°C Lo: 59°FLo: 15°C | Hi: 66°FHi: 19°C Lo: 59°FLo: 15°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 602 PM PDT Wed Sep 09 2026 
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Issued: 440 PM PDT Wed Sep 9 2026
Key Messages
- Warming and drying trend will bring widespread moderate to major HeatRisk through Thursday
- Cooler temperatures, closer to normal, Friday into the weekend
Aviation
... (00Z TAFS) Issued at 438 PM PDT Wed Sep 9 2026
VFR, onshore flow, and mid-upper level clouds through early tonight. Onshore flow eases with decreasing winds overnight. VFR expected again tomorrow with stronger onshore flow in the afternoon.
Vicinity of SFO...VFR. Gusts up to 20 kt this afternoon and tomorrow afternoon.
SFO B...