National Weather Service Forecast for: San Martin CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 5:12 am PDT Mar 19, 2026
 
This
Afternoon
This Afternoon: Sunny, with a high near 93. Calm wind becoming northwest around 6 mph.
Sunny
 Tonight

Tonight: Clear, with a low around 58. Light north wind.
Clear
 Friday

Friday: Sunny, with a high near 93. Calm wind becoming west around 5 mph in the afternoon.
Sunny
 Friday
Night
Friday Night: Increasing clouds, with a low around 56. West wind 5 to 7 mph becoming calm in the evening.
Increasing
Clouds
 Saturday

Saturday: Partly sunny, with a high near 84. Calm wind becoming west 5 to 8 mph in the afternoon.
Partly Sunny
 Saturday
Night
Saturday Night: Mostly clear, with a low around 50.
Mostly Clear
 Sunday

Sunday: Sunny, with a high near 82.
Sunny
 Sunday
Night
Sunday Night: Mostly clear, with a low around 50.
Mostly Clear
 Monday

Monday: Sunny, with a high near 85.
Sunny
Hi 93 °F Lo 58 °F Hi 93 °F Lo 56 °F Hi 84 °F Lo 50 °F Hi 82 °F Lo 50 °F Hi 85 °F

Heat Advisory
 

This Afternoon
 
 Sunny, with a high near 93. Calm wind becoming northwest around 6 mph.
Tonight
 
 Clear, with a low around 58. Light north wind.
Friday
 
 Sunny, with a high near 93. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
 
 Increasing clouds, with a low around 56. West wind 5 to 7 mph becoming calm in the evening.
Saturday
 
 Partly sunny, with a high near 84. Calm wind becoming west 5 to 8 mph in the afternoon.
Saturday Night
 
 Mostly clear, with a low around 50.
Sunday
 
 Sunny, with a high near 82.
Sunday Night
 
 Mostly clear, with a low around 50.
Monday
 
 Sunny, with a high near 85.
Monday Night
 
 Mostly clear, with a low around 52.
Tuesday
 
 Sunny, with a high near 86.
Tuesday Night
 
 Mostly clear, with a low around 50.
Wednesday
 
 Sunny, with a high near 79.

 

Forecast from NOAA-NWS for San Martin CA.