National Weather Service Forecast for: San Mateo CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 1:26 am PDT Jun 22, 2026
 
Overnight

Overnight: Mostly cloudy, with a low around 54. West southwest wind 3 to 5 mph.
Mostly Cloudy
 Monday

Monday: Mostly cloudy through mid morning, then gradual clearing, with a high near 73. Light southwest wind becoming west southwest 6 to 11 mph in the morning.
Becoming
Sunny
 Monday
Night
Monday Night: Increasing clouds, with a low around 55. West southwest wind 5 to 8 mph becoming calm after midnight.
Increasing
Clouds
 Tuesday

Tuesday: Partly sunny, then gradually becoming sunny, with a high near 76. Calm wind becoming west 5 to 9 mph in the afternoon.
Becoming
Sunny
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 55. West wind 5 to 9 mph becoming light west southwest in the evening.
Mostly Clear
 Wednesday

Wednesday: Mostly sunny, with a high near 77.
Mostly Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 56.
Mostly Clear
 Thursday

Thursday: Sunny, with a high near 74.
Sunny
 Thursday
Night
Thursday Night: Mostly clear, with a low around 55.
Mostly Clear
Lo 54 °F Hi 73 °F Lo 55 °F Hi 76 °F Lo 55 °F Hi 77 °F Lo 56 °F Hi 74 °F Lo 55 °F

 

Overnight
 
 Mostly cloudy, with a low around 54. West southwest wind 3 to 5 mph.
Monday
 
 Mostly cloudy through mid morning, then gradual clearing, with a high near 73. Light southwest wind becoming west southwest 6 to 11 mph in the morning.
Monday Night
 
 Increasing clouds, with a low around 55. West southwest wind 5 to 8 mph becoming calm after midnight.
Tuesday
 
 Partly sunny, then gradually becoming sunny, with a high near 76. Calm wind becoming west 5 to 9 mph in the afternoon.
Tuesday Night
 
 Mostly clear, with a low around 55. West wind 5 to 9 mph becoming light west southwest in the evening.
Wednesday
 
 Mostly sunny, with a high near 77.
Wednesday Night
 
 Mostly clear, with a low around 56.
Thursday
 
 Sunny, with a high near 74.
Thursday Night
 
 Mostly clear, with a low around 55.
Friday
 
 Mostly sunny, with a high near 72.
Friday Night
 
 Partly cloudy, with a low around 57.
Saturday
 
 Mostly sunny, with a high near 70.
Saturday Night
 
 Mostly clear, with a low around 54.
Sunday
 
 Sunny, with a high near 77.

 

Forecast from NOAA-NWS for San Mateo CA.