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Chapman, California Weather Forecast
Chapman, California Weather
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Weather Forecast for Chapman, California : Marin County
Issued: 12:27 pm PST Dec 18, 2025 Latitude: 37.9188141 Longitude: -122.5169192 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Friday Saturday Sunday Monday Tuesday Wednesday
Mostly Cloudy on This Afternoon 50% chance of rain on Tonight 90% chance of rain on Friday 70% chance of rain on Saturday 100% chance of thunderstorms on Sunday Rain on Monday Rain on Tuesday Rain on Wednesday
High: 59°F Low: 51°F High: 57°F High: 56°F High: 58°F High: 57°F High: 55°F High: 56°F
Low: 51°F Low: 51°F Low: 53°F Low: 49°F Low: 47°F  
Mostly Cloudy Rain Rain Rain Thunderstorms Rain Rain Rain
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Current Conditions at
OAKLAND - (KOAK)
54°
Mostly Cloudy
as of 1:53 PM PST
Rel. Humidity: 87%
Dew Point: 50°F
Visibility: 9 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
7 MPH
210° Southwest
Cloud Level(s): Few at 1100ft, Broken at 25000ft
Current Conditions at
SAN FRANCISCO - (KSFO)
54°
Mostly Cloudy
as of 1:56 PM PST
Rel. Humidity: 87%
Dew Point: 50°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Scattered at 700ft, Broken at 20000ft
Current Conditions at
NAPA - (KAPC)
57°
Mostly Cloudy
as of 2:00 PM PST
Rel. Humidity: 82%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: MVFR
Wind Data
5 MPH
260° West
Cloud Level(s): Broken at 1500ft
Current Conditions at
CONCORD - (KCCR)
61°
Clear
as of 1:53 PM PST
Rel. Humidity: 72%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Mostly Cloudy on This Afternoon This Afternoon... Mostly cloudy, with a high near 59. Calm wind.
50% chance of rain Tonight Tonight... A 50 percent chance of rain. Patchy fog between 9pm and midnight. Otherwise, cloudy, with a low around 51. Calm wind becoming south southwest around 5 mph after midnight. New precipitation amounts of less than a tenth of an inch possible.
90% chance of rain Friday Friday... Rain, mainly after 10am. High near 57. South southwest wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
90% chance of rain Friday Night Friday Night... Rain, mainly before 10pm. Patchy fog after 4am. Low around 51. West southwest wind 5 to 8 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
70% chance of rain Saturday Saturday... Rain likely, mainly after 10am. Patchy fog before 10am. Otherwise, cloudy, with a high near 56. Calm wind becoming south southeast around 5 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
100% chance of rain Saturday Night Saturday Night... Rain. Low around 51. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
100% chance of thunderstorms Sunday Sunday... Rain before 10am, then showers and possibly a thunderstorm between 10am and 1pm, then rain after 1pm. High near 58. Chance of precipitation is 100%.
Rain on Sunday Night Sunday Night... Rain. Cloudy, with a low around 53.
Rain on Monday Monday... Rain. Cloudy, with a high near 57.
Rain on Monday Night Monday Night... Rain. Cloudy, with a low around 49.
Rain on Tuesday Tuesday... Rain. Cloudy, with a high near 55.
Rain on Tuesday Night Tuesday Night... Rain. Cloudy, with a low around 47.
Rain on Wednesday Wednesday... Rain. Mostly cloudy, with a high near 56.
Current Radar Image


Sun Almanac for Chapman, California
Sunrise: 07:21 AM
Sunset: 4:53 PM
Civil Sunrise:06:51 AM
Civil Sunset: 5:22 PM
Nautical Sunrise: 06:18 AM
Nautical Sunset: 5:55 PM
Astro Sunrise: 05:46 AM
Astro Sunset: 6:28 PM
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