National Weather Service Forecast for: Clayton CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 5:12 am PDT Mar 19, 2026
 
Today

Today: Sunny, with a high near 93. North wind around 6 mph.
Sunny
 Tonight

Tonight: Clear, with a low around 60. Northwest wind around 5 mph becoming calm in the evening.
Clear
 Friday

Friday: Sunny, with a high near 94. Calm wind becoming north northeast around 5 mph in the afternoon.
Sunny
 Friday
Night
Friday Night: Increasing clouds, with a low around 59. Southwest wind around 7 mph.
Increasing
Clouds
 Saturday

Saturday: Mostly sunny, with a high near 88. West southwest wind 6 to 9 mph.
Mostly Sunny
 Saturday
Night
Saturday Night: Mostly clear, with a low around 53.
Mostly Clear
 Sunday

Sunday: Sunny, with a high near 86.
Sunny
 Sunday
Night
Sunday Night: Mostly clear, with a low around 50.
Mostly Clear
 Monday

Monday: Sunny, with a high near 85.
Sunny
Hi 93 °F Lo 60 °F Hi 94 °F Lo 59 °F Hi 88 °F Lo 53 °F Hi 86 °F Lo 50 °F Hi 85 °F

Heat Advisory
 

Today
 
 Sunny, with a high near 93. North wind around 6 mph.
Tonight
 
 Clear, with a low around 60. Northwest wind around 5 mph becoming calm in the evening.
Friday
 
 Sunny, with a high near 94. Calm wind becoming north northeast around 5 mph in the afternoon.
Friday Night
 
 Increasing clouds, with a low around 59. Southwest wind around 7 mph.
Saturday
 
 Mostly sunny, with a high near 88. West southwest wind 6 to 9 mph.
Saturday Night
 
 Mostly clear, with a low around 53.
Sunday
 
 Sunny, with a high near 86.
Sunday Night
 
 Mostly clear, with a low around 50.
Monday
 
 Sunny, with a high near 85.
Monday Night
 
 Mostly clear, with a low around 53.
Tuesday
 
 Sunny, with a high near 85.
Tuesday Night
 
 Mostly clear, with a low around 52.
Wednesday
 
 Sunny, with a high near 79.

 

Forecast from NOAA-NWS for Clayton CA.