National Weather Service Forecast for: Clayton CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 1:24 pm PST Dec 17, 2025
 
Tonight

Tonight: Patchy dense fog after 2am. Otherwise, mostly cloudy, with a low around 44. Southwest wind around 6 mph becoming calm in the evening.
Partly Cloudy
then Patchy
Dense Fog
 Thursday

Thursday: Patchy dense fog before 10am. Otherwise, partly sunny, with a high near 62. Calm wind becoming west northwest around 5 mph.
Patchy Dense
Fog then
Mostly Sunny
 Thursday
Night
Thursday Night: A 30 percent chance of rain, mainly after 4am. Patchy fog between 9pm and 10pm. Otherwise, mostly cloudy, with a low around 47. South southwest wind 3 to 5 mph.
Chance Rain
and Patchy
Fog
 Friday

Friday: Rain, mainly after 10am. High near 62. South southwest wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Rain

 Friday
Night
Friday Night: Rain, mainly before 4am. Low around 52. South southwest wind 6 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain

 Saturday

Saturday: Rain, mainly after 10am. High near 60. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain

 Saturday
Night
Saturday Night: Rain before 10pm, then showers and possibly a thunderstorm after 10pm. Low around 52. Chance of precipitation is 90%.
Showers

 Sunday

Sunday: Showers and possibly a thunderstorm. Cloudy, with a high near 61.
Showers

 Sunday
Night
Sunday Night: Rain. Cloudy, with a low around 51.
Rain
Lo 44 °F Hi 62 °F Lo 47 °F Hi 62 °F Lo 52 °F Hi 60 °F Lo 52 °F Hi 61 °F Lo 51 °F

 

Tonight
 
 Patchy dense fog after 2am. Otherwise, mostly cloudy, with a low around 44. Southwest wind around 6 mph becoming calm in the evening.
Thursday
 
 Patchy dense fog before 10am. Otherwise, partly sunny, with a high near 62. Calm wind becoming west northwest around 5 mph.
Thursday Night
 
 A 30 percent chance of rain, mainly after 4am. Patchy fog between 9pm and 10pm. Otherwise, mostly cloudy, with a low around 47. South southwest wind 3 to 5 mph.
Friday
 
 Rain, mainly after 10am. High near 62. South southwest wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
 
 Rain, mainly before 4am. Low around 52. South southwest wind 6 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
 
 Rain, mainly after 10am. High near 60. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
 
 Rain before 10pm, then showers and possibly a thunderstorm after 10pm. Low around 52. Chance of precipitation is 90%.
Sunday
 
 Showers and possibly a thunderstorm. Cloudy, with a high near 61.
Sunday Night
 
 Rain. Cloudy, with a low around 51.
Monday
 
 Rain likely. Mostly cloudy, with a high near 58.
Monday Night
 
 Rain likely. Cloudy, with a low around 46.
Tuesday
 
 Rain likely. Mostly cloudy, with a high near 55.
Tuesday Night
 
 Rain. Cloudy, with a low around 46.
Wednesday
 
 Rain likely. Mostly cloudy, with a high near 56.

 

Forecast from NOAA-NWS for Clayton CA.