Marin County, CA Weather Forecast
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Marin County Weather Forecast
| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
| Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy |
| Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Hi: 81°FHi: 27°C Lo: 51°FLo: 11°C | Hi: 81°FHi: 27°C Lo: 51°FLo: 11°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 902 PM PDT Sat Aug 22 2026 

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Issued: 1204 AM PDT Sun Aug 23 2026
Key Messages
Updated at 1204 AM PDT Sun Aug 23 2026- Temperatures near to slightly below seasonal averages persist within the marine layer through the next week
- Warm and dry conditions continue above 1000 feet
Aviation
... (06Z TAFS) Issued at 927 PM PDT Sat Aug 22 2026
VFR continues except for patchy coastal stratus and fog /IFR/ along San Mateo County. Mid and high clouds, including wildfire smoke over the north Central Coast, are moving northeastward over the forecast area. Northerly to northeaste...
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