National Weather Service Forecast for: Clayton CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 2:54 pm PST Dec 22, 2025
 
Tonight

Tonight: A 40 percent chance of rain. Patchy fog before midnight. Otherwise, cloudy, with a low around 51. Calm wind becoming south southeast around 5 mph after midnight.
Chance Rain
and Patchy
Fog
 Tuesday

Tuesday: Rain likely, mainly after 4pm. Cloudy, with a high near 62. South wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Rain Likely

 Tuesday
Night
Tuesday Night: Rain. Low around 49. Breezy, with a southeast wind 18 to 22 mph, with gusts as high as 43 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Rain and
Breezy
 Wednesday

Wednesday: Rain, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. High near 60. Southwest wind 8 to 18 mph becoming south southeast in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers

 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm before 7pm, then rain between 7pm and 4am, then showers and possibly a thunderstorm after 4am. Low around 51. South southeast wind 16 to 21 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Showers

 Christmas
Day
Christmas Day: Showers and possibly a thunderstorm before 7am, then rain between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 56. Breezy. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and
Breezy
 Thursday
Night
Thursday Night: Showers and possibly a thunderstorm before 10pm, then rain after 10pm. Low around 46. Chance of precipitation is 100%.
Showers

 Friday

Friday: Rain, mainly before 4pm. Cloudy, with a high near 54.
Rain

 Friday
Night
Friday Night: A chance of rain, mainly before 10pm. Mostly cloudy, with a low around 42.
Chance Rain
Lo 51 °F Hi 62 °F Lo 49 °F Hi 60 °F Lo 51 °F Hi 56 °F Lo 46 °F Hi 54 °F Lo 42 °F

Flood Watch
Wind Advisory
 

Tonight
 
 A 40 percent chance of rain. Patchy fog before midnight. Otherwise, cloudy, with a low around 51. Calm wind becoming south southeast around 5 mph after midnight.
Tuesday
 
 Rain likely, mainly after 4pm. Cloudy, with a high near 62. South wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
 
 Rain. Low around 49. Breezy, with a southeast wind 18 to 22 mph, with gusts as high as 43 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
 
 Rain, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. High near 60. Southwest wind 8 to 18 mph becoming south southeast in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
 Showers and possibly a thunderstorm before 7pm, then rain between 7pm and 4am, then showers and possibly a thunderstorm after 4am. Low around 51. South southeast wind 16 to 21 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Christmas Day
 
 Showers and possibly a thunderstorm before 7am, then rain between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 56. Breezy. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
 
 Showers and possibly a thunderstorm before 10pm, then rain after 10pm. Low around 46. Chance of precipitation is 100%.
Friday
 
 Rain, mainly before 4pm. Cloudy, with a high near 54.
Friday Night
 
 A chance of rain, mainly before 10pm. Mostly cloudy, with a low around 42.
Saturday
 
 Mostly sunny, with a high near 54.
Saturday Night
 
 Areas of frost. Otherwise, mostly clear, with a low around 37.
Sunday
 
 Areas of frost. Otherwise, sunny, with a high near 53.
Sunday Night
 
 Patchy frost. Otherwise, mostly clear, with a low around 37.
Monday
 
 Patchy frost. Otherwise, mostly sunny, with a high near 53.

 

Forecast from NOAA-NWS for Clayton CA.