National Weather Service Forecast for: Foster City CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 2:20 am PDT Jun 19, 2025
 
Juneteenth

Juneteenth: Sunny, with a high near 67. West wind 11 to 21 mph, with gusts as high as 31 mph.
Sunny

 Tonight

Tonight: Partly cloudy, with a low around 52. West wind 11 to 20 mph, with gusts as high as 33 mph.
Partly Cloudy

 Friday

Friday: Partly sunny, then gradually becoming sunny, with a high near 67. Breezy, with a west northwest wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 33 mph.
Becoming
Sunny and
Breezy
 Friday
Night
Friday Night: Mostly clear, with a low around 52. Breezy, with a west northwest wind 17 to 25 mph, with gusts as high as 39 mph.
Mostly Clear
and Breezy
 Saturday

Saturday: Sunny, with a high near 71. Northwest wind 10 to 20 mph, with gusts as high as 24 mph.
Sunny

 Saturday
Night
Saturday Night: Clear, with a low around 52.
Clear

 Sunday

Sunday: Sunny, with a high near 72.
Sunny

 Sunday
Night
Sunday Night: Mostly clear, with a low around 52.
Mostly Clear

 Monday

Monday: Sunny, with a high near 74.
Sunny
Hi 67 °F Lo 52 °F Hi 67 °F Lo 52 °F Hi 71 °F Lo 52 °F Hi 72 °F Lo 52 °F Hi 74 °F

 

Juneteenth
 
 Sunny, with a high near 67. West wind 11 to 21 mph, with gusts as high as 31 mph.
Tonight
 
 Partly cloudy, with a low around 52. West wind 11 to 20 mph, with gusts as high as 33 mph.
Friday
 
 Partly sunny, then gradually becoming sunny, with a high near 67. Breezy, with a west northwest wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 33 mph.
Friday Night
 
 Mostly clear, with a low around 52. Breezy, with a west northwest wind 17 to 25 mph, with gusts as high as 39 mph.
Saturday
 
 Sunny, with a high near 71. Northwest wind 10 to 20 mph, with gusts as high as 24 mph.
Saturday Night
 
 Clear, with a low around 52.
Sunday
 
 Sunny, with a high near 72.
Sunday Night
 
 Mostly clear, with a low around 52.
Monday
 
 Sunny, with a high near 74.
Monday Night
 
 Mostly clear, with a low around 53.
Tuesday
 
 Mostly sunny, with a high near 73.
Tuesday Night
 
 Partly cloudy, with a low around 53.
Wednesday
 
 Mostly sunny, with a high near 75.

 

Forecast from NOAA-NWS for Foster City CA.