National Weather Service Forecast for: Brentwood CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 12:48 am PST Dec 23, 2025
 
Overnight

Overnight: A 20 percent chance of rain. Areas of dense fog. Otherwise, cloudy, with a low around 53. Light southeast wind.
Slight Chance
Rain and
Areas Dense
Fog
 Tuesday

Tuesday: A 30 percent chance of rain, mainly after 4pm. Areas of fog before 10am. Otherwise, cloudy, with a high near 61. Light south southeast wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 23 mph.
Chance Rain
and Areas Fog

 Tuesday
Night
Tuesday Night: Rain likely, mainly after 8pm. Cloudy, with a low around 54. Breezy, with a southeast wind 16 to 25 mph, with gusts as high as 48 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain Likely
and Breezy

 Wednesday

Wednesday: Rain, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. High near 59. Calm wind becoming southeast 5 to 9 mph in the morning. Winds could gust as high as 18 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 after 7pm. Low around 54. South southeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Showers

 Christmas
Day
Christmas Day: Rain before 10am, then showers and possibly a thunderstorm after 10am. High near 55. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Showers

 Thursday
Night
Thursday Night: Showers and possibly a thunderstorm before 1am, then rain after 1am. Low around 48. Chance of precipitation is 100%.
Showers

 Friday

Friday: Rain. Patchy fog after 4pm. Otherwise, cloudy, with a high near 52.
Rain and
Patchy Fog

 Friday
Night
Friday Night: Rain likely, mainly before 10pm. Patchy fog before 9pm, then patchy fog after 5am. Otherwise, mostly cloudy, with a low around 45.
Rain Likely
and Patchy
Fog
Lo 53 °F Hi 61 °F Lo 54 °F Hi 59 °F Lo 54 °F Hi 55 °F Lo 48 °F Hi 52 °F Lo 45 °F

Flood Watch
Wind Advisory
 

Overnight
 
 A 20 percent chance of rain. Areas of dense fog. Otherwise, cloudy, with a low around 53. Light southeast wind.
Tuesday
 
 A 30 percent chance of rain, mainly after 4pm. Areas of fog before 10am. Otherwise, cloudy, with a high near 61. Light south southeast wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 23 mph.
Tuesday Night
 
 Rain likely, mainly after 8pm. Cloudy, with a low around 54. Breezy, with a southeast wind 16 to 25 mph, with gusts as high as 48 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
 
 Rain, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. High near 59. Calm wind becoming southeast 5 to 9 mph in the morning. Winds could gust as high as 18 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 after 7pm. Low around 54. South southeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Christmas Day
 
 Rain before 10am, then showers and possibly a thunderstorm after 10am. High near 55. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
 
 Showers and possibly a thunderstorm before 1am, then rain after 1am. Low around 48. Chance of precipitation is 100%.
Friday
 
 Rain. Patchy fog after 4pm. Otherwise, cloudy, with a high near 52.
Friday Night
 
 Rain likely, mainly before 10pm. Patchy fog before 9pm, then patchy fog after 5am. Otherwise, mostly cloudy, with a low around 45.
Saturday
 
 Patchy fog before 9am. Otherwise, partly sunny, with a high near 52.
Saturday Night
 
 Mostly clear, with a low around 39.
Sunday
 
 Sunny, with a high near 49.
Sunday Night
 
 Mostly clear, with a low around 39.
Monday
 
 Patchy fog. Otherwise, partly sunny, with a high near 50.

 

Forecast from NOAA-NWS for Brentwood CA.