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San Geronimo, California Weather Forecast
San Geronimo, California Weather
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Weather Forecast for San Geronimo, California : Marin County
Issued: 2:37 am PDT Nov 1, 2025 Latitude: 38.0132562 Longitude: -122.6638731 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Sunday Monday Tuesday Wednesday Thursday Friday
Sunny on Today Mostly Clear on Tonight Sunny on Sunday Mostly Sunny on Monday 20% chance of rain on Tuesday 70% chance of thunderstorms on Wednesday Mostly Sunny on Thursday Partly Sunny on Friday
High: 70°F Low: 54°F High: 71°F High: 65°F High: 65°F High: 64°F High: 65°F High: 67°F
Low: 50°F Low: 53°F Low: 56°F Low: 53°F Low: 53°F  
Sunny Mostly Clear Sunny Mostly Sunny Rain Thunderstorms Mostly Sunny Partly Sunny
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Current Conditions at
NAPA - (KAPC)
54°
Cloudy
Fog
as of 9:54 AM PDST
Rel. Humidity: 100%
Dew Point: 54°F
Visibility: 1/4 Miles
Pressure: 30.13 in.
Flight Rule: LIFR
Wind Data
5 MPH
190° South
Cloud Level(s): Solid Overcast at 200ft
Current Conditions at
SAN FRANCISCO - (KSFO)
57°
Mostly Clear
as of 9:56 AM PDST
Rel. Humidity: 87%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
8 MPH
310° Northwest
Cloud Level(s): Few at 600ft
Current Conditions at
OAKLAND - (KOAK)
55°
Cloudy
as of 10:04 AM PDST
Rel. Humidity: 100%
Dew Point: 55°F
Visibility: 2 Miles
Pressure: 30.14 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 500ft
Current Conditions at
CONCORD - (KCCR)
59°
Clear
as of 9:53 AM PDST
Rel. Humidity: 72%
Dew Point: 50°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Sunny on Today Today... Sunny, with a high near 70. Northwest wind 5 to 8 mph.

Mostly Clear on Tonight Tonight... Mostly clear, with a low around 54. Northwest wind 3 to 6 mph.

Sunny on Sunday Sunday... Sunny, with a high near 71. Calm wind becoming west northwest around 6 mph in the afternoon.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 50. West northwest wind around 6 mph becoming calm in the evening.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 65. West wind 3 to 6 mph.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 53.

20% chance of rain Tuesday Tuesday... A 20 percent chance of rain. Mostly cloudy, with a high near 65.

20% chance of rain Tuesday Night Tuesday Night... A chance of rain, mainly after 11pm. Mostly cloudy, with a low around 56.

70% chance of thunderstorms Wednesday Wednesday... Showers and possibly a thunderstorm before 11am, then rain likely after 11am. Mostly cloudy, with a high near 64.

10% chance of rain Wednesday Night Wednesday Night... A slight chance of rain before 11pm. Mostly cloudy, with a low around 53.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 65.

10% chance of rain Thursday Night Thursday Night... A slight chance of rain. Partly cloudy, with a low around 53.

Partly Sunny on Friday Friday... Partly sunny, with a high near 67.

Current Radar Image


Sun Almanac for San Geronimo, California
Sunrise: 07:37 AM
Sunset: 6:11 PM
Civil Sunrise:07:10 AM
Civil Sunset: 6:39 PM
Nautical Sunrise: 06:39 AM
Nautical Sunset: 7:10 PM
Astro Sunrise: 06:08 AM
Astro Sunset: 7:40 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.