National Weather Service Forecast for: Brentwood CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 1:40 am PST Dec 5, 2025
 
Overnight

Overnight: Areas of fog after 3am. Areas of frost. Otherwise, partly cloudy, with a low around 35. Calm wind.
Areas Frost
and Areas Fog
 Friday

Friday: Areas of frost before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 54. East southeast wind around 5 mph becoming calm in the morning.
Areas Frost
then Sunny
 Friday
Night
Friday Night: Partly cloudy, with a low around 42. South southeast wind around 6 mph becoming calm after midnight.
Partly Cloudy

 Saturday

Saturday: Mostly sunny, with a high near 58. North northwest wind 3 to 6 mph.
Mostly Sunny

 Saturday
Night
Saturday Night: Partly cloudy, with a low around 44. West northwest wind around 5 mph.
Partly Cloudy

 Sunday

Sunday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 60.
Patchy Fog
then Mostly
Sunny
 Sunday
Night
Sunday Night: Partly cloudy, with a low around 45.
Partly Cloudy

 Monday

Monday: Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 62.
Patchy Fog
then Mostly
Sunny
 Monday
Night
Monday Night: Partly cloudy, with a low around 45.
Partly Cloudy
Lo 35 °F Hi 54 °F Lo 42 °F Hi 58 °F Lo 44 °F Hi 60 °F Lo 45 °F Hi 62 °F Lo 45 °F

Cold Weather Advisory
 

Overnight
 
 Areas of fog after 3am. Areas of frost. Otherwise, partly cloudy, with a low around 35. Calm wind.
Friday
 
 Areas of frost before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 54. East southeast wind around 5 mph becoming calm in the morning.
Friday Night
 
 Partly cloudy, with a low around 42. South southeast wind around 6 mph becoming calm after midnight.
Saturday
 
 Mostly sunny, with a high near 58. North northwest wind 3 to 6 mph.
Saturday Night
 
 Partly cloudy, with a low around 44. West northwest wind around 5 mph.
Sunday
 
 Patchy fog before 9am. Otherwise, partly sunny, with a high near 60.
Sunday Night
 
 Partly cloudy, with a low around 45.
Monday
 
 Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 62.
Monday Night
 
 Partly cloudy, with a low around 45.
Tuesday
 
 Partly sunny, with a high near 61.
Tuesday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 46.
Wednesday
 
 Patchy fog. Otherwise, mostly sunny, with a high near 64.
Wednesday Night
 
 Patchy fog. Otherwise, mostly clear, with a low around 47.
Thursday
 
 Patchy fog. Otherwise, mostly sunny, with a high near 63.

 

Forecast from NOAA-NWS for Brentwood CA.