Old Town, California Weather
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Weather Forecast for Old Town, California : Marin County
Issued: 8:54 am PDT Oct 18, 2025 Latitude: 38.0957535 Longitude: -122.5688697 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Sunday Monday Tuesday Wednesday Thursday Friday
Sunny on This Afternoon Mostly Clear on Tonight Sunny on Sunday Sunny on Monday Sunny on Tuesday Mostly Sunny on Wednesday Sunny on Thursday 10% chance of rain on Friday
High: 79°F Low: 54°F High: 78°F High: 80°F High: 78°F High: 72°F High: 74°F High: 72°F
Low: 54°F Low: 54°F Low: 55°F Low: 52°F Low: 54°F  
Sunny Mostly Clear Sunny Sunny Sunny Mostly Sunny Sunny Rain
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Current Conditions at
NAPA - (KAPC)
73°
Clear
as of 11:29 AM PDST
Rel. Humidity: 53%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 30.04 in.
Flight Rule: VFR
Wind Data
10 MPH
100° East
Cloud Level(s): Clear
Sunny on This Afternoon This Afternoon... Sunny, with a high near 79. East southeast wind 3 to 8 mph.
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 54. West southwest wind 7 to 10 mph.
Sunny on Sunday Sunday... Sunny, with a high near 78. Light west southwest wind becoming west 6 to 11 mph in the afternoon.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 54. West wind 12 to 17 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Sunny on Monday Monday... Sunny, with a high near 80. East wind around 5 mph becoming calm in the afternoon.
Clear on Monday Night Monday Night... Clear, with a low around 54.
Sunny on Tuesday Tuesday... Sunny, with a high near 78.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 55.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 72.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 52.
Sunny on Thursday Thursday... Sunny, with a high near 74.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 54.
10% chance of rain Friday Friday... A slight chance of rain. Partly sunny, with a high near 72.
Sun Almanac for Old Town, California
Sunrise: 07:23 AM
Sunset: 6:28 PM
Civil Sunrise:06:56 AM
Civil Sunset: 6:55 PM
Nautical Sunrise: 06:25 AM
Nautical Sunset: 7:25 PM
Astro Sunrise: 05:55 AM
Astro Sunset: 7:56 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.