National Weather Service Forecast for: 3 Miles WNW Portola Valley CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 1:26 am PDT Jun 22, 2026
 
Overnight

Overnight: Mostly clear, with a low around 52. Calm wind.
Mostly Clear
 Monday

Monday: Sunny, with a high near 75. Calm wind becoming southwest around 5 mph in the afternoon.
Sunny
 Monday
Night
Monday Night: Mostly clear, with a low around 53. Light southwest wind.
Mostly Clear
 Tuesday

Tuesday: Sunny, with a high near 78. Light west wind.
Sunny
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 53. Light southwest wind.
Mostly Clear
 Wednesday

Wednesday: Sunny, with a high near 80.
Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 54.
Mostly Clear
 Thursday

Thursday: Sunny, with a high near 76.
Sunny
 Thursday
Night
Thursday Night: Mostly clear, with a low around 52.
Mostly Clear
Lo 52 °F Hi 75 °F Lo 53 °F Hi 78 °F Lo 53 °F Hi 80 °F Lo 54 °F Hi 76 °F Lo 52 °F

 

Overnight
 
 Mostly clear, with a low around 52. Calm wind.
Monday
 
 Sunny, with a high near 75. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
 
 Mostly clear, with a low around 53. Light southwest wind.
Tuesday
 
 Sunny, with a high near 78. Light west wind.
Tuesday Night
 
 Mostly clear, with a low around 53. Light southwest wind.
Wednesday
 
 Sunny, with a high near 80.
Wednesday Night
 
 Mostly clear, with a low around 54.
Thursday
 
 Sunny, with a high near 76.
Thursday Night
 
 Mostly clear, with a low around 52.
Friday
 
 Mostly sunny, with a high near 71.
Friday Night
 
 Partly cloudy, with a low around 55.
Saturday
 
 Mostly sunny, with a high near 68.
Saturday Night
 
 Mostly clear, with a low around 50.
Sunday
 
 Sunny, with a high near 78.

 

Forecast from NOAA-NWS for 3 Miles WNW Portola Valley CA.