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San Geronimo Weather Forecast
| TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
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| Clear | Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy |
| Lo: 50°FLo: 10°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 50°FLo: 10°C | Hi: 61°FHi: 16°C | Hi: 65°FHi: 18°C Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C Lo: 49°FLo: 9°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 602 PM PDT Fri Oct 23 2026 
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Issued: 513 PM PDT Fri Oct 23 2026
Key Messages
Updated at 1200 PM PDT Fri Oct 23 2026- Gusty offshore flow across the North Bay Interior Mountains this evening through Saturday morning
- Below normal temperatures today, increasing to near normal for the weekend
- Coastal flooding due astronomical high tides and thermal expansion this weekend through at least the middle of next week
Aviation
... (00Z TAFS) Issued at 513 PM PDT Fri Oct 23 2026
It`s VFR across the forecast area. Surface high pressure will build into the Great Basin tonight ...