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San Anselmo Weather Forecast
| REST OF TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | WEDNESDAY |
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| Chance of Rain | Rain | Patchy Fog | Patchy Fog | Fog | Partly Cloudy | Patchy Fog | Patchy Fog | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy |
| Lo: 55°FLo: 13°C | Hi: 66°FHi: 19°C | Lo: 46°FLo: 8°C | Hi: 71°FHi: 22°C | Lo: 46°FLo: 8°C | Hi: 80°FHi: 27°C | Lo: 50°FLo: 10°C | Hi: 75°FHi: 24°C | Hi: 76°FHi: 24°C Lo: 55°FLo: 13°C | Hi: 76°FHi: 24°C Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C Lo: 56°FLo: 13°C | Hi: 81°FHi: 27°C Lo: 56°FLo: 13°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 902 PM PDT Wed Sep 02 2026 
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Issued: 957 PM PDT Wed Sep 2 2026
Key Messages
Updated at 1159 AM PDT Wed Sep 2 2026- Well below normal temperatures with beneficial, light rain chances through Thursday
- Gradual warming and drying trend with the return of the marine layer Friday into the weekend
Aviation
... (06Z TAFS) Issued at 957 PM PDT Wed Sep 2 2026
Minimal changes to the TAF package this evening. The near term changes covered stratus that has started to form along the coast and in some of the valleys. Outside of that, we await the arrival of a cold front. The h...