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

Tonight: Patchy drizzle after 8pm. Patchy dense fog after 11pm. Otherwise, mostly cloudy, with a low around 47. West wind around 5 mph becoming calm in the evening.
Patchy
Drizzle and
Patchy Dense
Fog
 Thursday

Thursday: Areas of dense fog before 11am. Otherwise, partly sunny, with a high near 60. Light and variable wind.
Areas Dense
Fog then
Mostly Sunny
 Thursday
Night
Thursday Night: A 50 percent chance of rain. Patchy fog between 10pm and 1am. Otherwise, mostly cloudy, with a low around 51. Light and variable wind. New precipitation amounts of less than a tenth of an inch possible.
Chance Rain
and Patchy
Fog
 Friday

Friday: Rain, mainly after 10am. High near 61. South southwest wind 6 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain

 Friday
Night
Friday Night: Rain, mainly before 4am. Low around 52. South southwest wind 7 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain

 Saturday

Saturday: Rain, mainly after 10am. High near 59. Chance of precipitation is 80%. New precipitation amounts between a quarter and half 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 before 10am, then rain after 10am. Cloudy, with a high near 60.
Showers

 Sunday
Night
Sunday Night: Rain. Cloudy, with a low around 52.
Rain
Lo 47 °F Hi 60 °F Lo 51 °F Hi 61 °F Lo 52 °F Hi 59 °F Lo 52 °F Hi 60 °F Lo 52 °F

 

Tonight
 
 Patchy drizzle after 8pm. Patchy dense fog after 11pm. Otherwise, mostly cloudy, with a low around 47. West wind around 5 mph becoming calm in the evening.
Thursday
 
 Areas of dense fog before 11am. Otherwise, partly sunny, with a high near 60. Light and variable wind.
Thursday Night
 
 A 50 percent chance of rain. Patchy fog between 10pm and 1am. Otherwise, mostly cloudy, with a low around 51. Light and variable wind. New precipitation amounts of less than a tenth of an inch possible.
Friday
 
 Rain, mainly after 10am. High near 61. South southwest wind 6 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
 
 Rain, mainly before 4am. Low around 52. South southwest wind 7 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
 
 Rain, mainly after 10am. High near 59. Chance of precipitation is 80%. New precipitation amounts between a quarter and half 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 before 10am, then rain after 10am. Cloudy, with a high near 60.
Sunday Night
 
 Rain. Cloudy, with a low around 52.
Monday
 
 Rain. Cloudy, with a high near 58.
Monday Night
 
 Rain likely. Mostly cloudy, with a low around 49.
Tuesday
 
 Rain. Mostly cloudy, with a high near 57.
Tuesday Night
 
 Rain. Cloudy, with a low around 49.
Wednesday
 
 Rain. Cloudy, with a high near 57.

 

Forecast from NOAA-NWS for San Bruno CA.