National Weather Service Forecast for: 6 Miles SW Portola Valley CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 11:26 am PDT May 26, 2026
 
This
Afternoon
This Afternoon: Mostly sunny, with a high near 57. West northwest wind around 11 mph, with gusts as high as 26 mph.
Mostly Sunny


 Tonight

Tonight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 47. West northwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 29 mph.
Mostly Cloudy
then Patchy
Fog

 Wednesday

Wednesday: Patchy fog before 7am. Otherwise, partly sunny, with a high near 61. Calm wind becoming west around 5 mph in the afternoon.
Patchy Fog
then Mostly
Sunny

 Wednesday
Night
Wednesday Night: A 20 percent chance of rain after 4am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 47. Calm wind.
Patchy Fog
then Slight
Chance Rain
and Patchy
Fog
 Thursday

Thursday: A 40 percent chance of rain, mainly before 11am. Partly sunny, with a high near 62. Calm wind becoming southwest around 6 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Chance Rain


 Thursday
Night
Thursday Night: Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 47.
Patchy Fog


 Friday

Friday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 61.
Patchy Fog
then Mostly
Sunny

 Friday
Night
Friday Night: Mostly cloudy, with a low around 48.
Mostly Cloudy


 Saturday

Saturday: Partly sunny, with a high near 61.
Partly Sunny
Hi 57 °F Lo 47 °F Hi 61 °F Lo 47 °F Hi 62 °F Lo 47 °F Hi 61 °F Lo 48 °F Hi 61 °F

 

This Afternoon
 
 Mostly sunny, with a high near 57. West northwest wind around 11 mph, with gusts as high as 26 mph.
Tonight
 
 Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 47. West northwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 29 mph.
Wednesday
 
 Patchy fog before 7am. Otherwise, partly sunny, with a high near 61. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
 
 A 20 percent chance of rain after 4am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 47. Calm wind.
Thursday
 
 A 40 percent chance of rain, mainly before 11am. Partly sunny, with a high near 62. Calm wind becoming southwest around 6 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
 
 Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 47.
Friday
 
 Patchy fog before 9am. Otherwise, partly sunny, with a high near 61.
Friday Night
 
 Mostly cloudy, with a low around 48.
Saturday
 
 Partly sunny, with a high near 61.
Saturday Night
 
 Mostly clear, with a low around 44.
Sunday
 
 Mostly sunny, with a high near 67.
Sunday Night
 
 Mostly clear, with a low around 46.
Monday
 
 Mostly sunny, with a high near 71.

 

Forecast from NOAA-NWS for 6 Miles SW Portola Valley CA.