National Weather Service Forecast for: San Mateo CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 1:26 pm PDT Apr 6, 2026
 
This
Afternoon
This Afternoon: Sunny, with a high near 69. West wind around 9 mph.
Sunny
Tonight

Tonight: Mostly cloudy, with a low around 50. West wind 3 to 7 mph.
Mostly Cloudy
Tuesday

Tuesday: Partly sunny, then gradually becoming sunny, with a high near 70. Calm wind becoming west 5 to 9 mph in the morning.
Becoming
Sunny
Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 52. West wind 3 to 8 mph.
Partly Cloudy
Wednesday

Wednesday: Sunny, with a high near 73. Calm wind becoming west 5 to 7 mph in the afternoon.
Sunny
Wednesday
Night
Wednesday Night: Mostly cloudy, with a low around 55.
Mostly Cloudy
Thursday

Thursday: A 30 percent chance of rain, mainly after 11am.  Mostly cloudy, with a high near 72.
Chance Rain
Thursday
Night
Thursday Night: A chance of rain.  Mostly cloudy, with a low around 54.
Chance Rain
Friday

Friday: Rain likely before 11am, then showers likely and possibly a thunderstorm after 11am.  Mostly cloudy, with a high near 71.
Showers
Likely
Hi 69 °F Lo 50 °F Hi 70 °F Lo 52 °F Hi 73 °F Lo 55 °F Hi 72 °F Lo 54 °F Hi 71 °F

 

This Afternoon
 
Sunny, with a high near 69. West wind around 9 mph.
Tonight
 
Mostly cloudy, with a low around 50. West wind 3 to 7 mph.
Tuesday
 
Partly sunny, then gradually becoming sunny, with a high near 70. Calm wind becoming west 5 to 9 mph in the morning.
Tuesday Night
 
Partly cloudy, with a low around 52. West wind 3 to 8 mph.
Wednesday
 
Sunny, with a high near 73. Calm wind becoming west 5 to 7 mph in the afternoon.
Wednesday Night
 
Mostly cloudy, with a low around 55.
Thursday
 
A 30 percent chance of rain, mainly after 11am. Mostly cloudy, with a high near 72.
Thursday Night
 
A chance of rain. Mostly cloudy, with a low around 54.
Friday
 
Rain likely before 11am, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 71.
Friday Night
 
A chance of rain. Mostly cloudy, with a low around 52.
Saturday
 
A chance of rain. Partly sunny, with a high near 67.
Saturday Night
 
A chance of rain. Mostly cloudy, with a low around 49.
Sunday
 
A chance of rain. Mostly sunny, with a high near 66.

 

Forecast from NOAA-NWS for San Mateo CA.