National Weather Service Forecast for: Foster City CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 1:26 pm PDT May 26, 2026
 
Tonight

Tonight: Partly cloudy, with a low around 50. Breezy, with a west northwest wind 17 to 22 mph becoming light west after midnight. Winds could gust as high as 34 mph.
Mostly Clear
and Breezy
then Partly
Cloudy
 Wednesday

Wednesday: Mostly sunny, with a high near 68. Light and variable wind becoming west 6 to 11 mph in the afternoon.
Mostly Sunny

 Wednesday
Night
Wednesday Night: A 20 percent chance of rain after 4am. Partly cloudy, with a low around 51. South southwest wind 3 to 7 mph.
Partly Cloudy
then Slight
Chance Rain
 Thursday

Thursday: A 30 percent chance of rain, mainly before 11am. Partly sunny, with a high near 69. Light and variable wind becoming west 5 to 7 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Chance Rain

 Thursday
Night
Thursday Night: Partly cloudy, with a low around 52. West wind 5 to 9 mph becoming calm in the evening.
Partly Cloudy

 Friday

Friday: Partly sunny, with a high near 66.
Partly Sunny

 Friday
Night
Friday Night: Partly cloudy, with a low around 52.
Partly Cloudy

 Saturday

Saturday: Mostly sunny, with a high near 67.
Mostly Sunny

 Saturday
Night
Saturday Night: Mostly clear, with a low around 50.
Mostly Clear
Lo 50 °F Hi 68 °F Lo 51 °F Hi 69 °F Lo 52 °F Hi 66 °F Lo 52 °F Hi 67 °F Lo 50 °F

 

Tonight
 
 Partly cloudy, with a low around 50. Breezy, with a west northwest wind 17 to 22 mph becoming light west after midnight. Winds could gust as high as 34 mph.
Wednesday
 
 Mostly sunny, with a high near 68. Light and variable wind becoming west 6 to 11 mph in the afternoon.
Wednesday Night
 
 A 20 percent chance of rain after 4am. Partly cloudy, with a low around 51. South southwest wind 3 to 7 mph.
Thursday
 
 A 30 percent chance of rain, mainly before 11am. Partly sunny, with a high near 69. Light and variable wind becoming west 5 to 7 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
 
 Partly cloudy, with a low around 52. West wind 5 to 9 mph becoming calm in the evening.
Friday
 
 Partly sunny, with a high near 66.
Friday Night
 
 Partly cloudy, with a low around 52.
Saturday
 
 Mostly sunny, with a high near 67.
Saturday Night
 
 Mostly clear, with a low around 50.
Sunday
 
 Sunny, with a high near 72.
Sunday Night
 
 Clear, with a low around 51.
Monday
 
 Sunny, with a high near 75.
Monday Night
 
 Mostly clear, with a low around 52.
Tuesday
 
 Mostly sunny, with a high near 74.

 

Forecast from NOAA-NWS for Foster City CA.