National Weather Service Forecast for: 6 Miles SW Portola Valley CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 3:06 pm PST Nov 1, 2026
 
Tonight

Tonight: Partly cloudy, with a low around 45. Calm wind.
Partly Cloudy


 Monday

Monday: Mostly cloudy, with a high near 64. Calm wind becoming west around 5 mph.
Mostly Cloudy


 Monday
Night
Monday Night: Showers likely, mainly after 4am. Mostly cloudy, with a low around 49. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Mostly Cloudy
then Showers
Likely

 Tuesday

Tuesday: Showers, mainly before 4pm. High near 62. South wind 5 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers


 Tuesday
Night
Tuesday Night: A 30 percent chance of showers before 10pm. Areas of fog before midnight. Otherwise, mostly cloudy, with a low around 48. Calm wind.
Chance
Showers and
Areas Fog
then Mostly
Cloudy
 Wednesday

Wednesday: Mostly sunny, with a high near 64.
Mostly Sunny


 Wednesday
Night
Wednesday Night: Mostly cloudy, with a low around 49.
Mostly Cloudy


 Thursday

Thursday: Mostly sunny, with a high near 67.
Mostly Sunny


 Thursday
Night
Thursday Night: Partly cloudy, with a low around 49.
Partly Cloudy
Lo 45 °F Hi 64 °F Lo 49 °F Hi 62 °F Lo 48 °F Hi 64 °F Lo 49 °F Hi 67 °F Lo 49 °F

 

Tonight
 
 Partly cloudy, with a low around 45. Calm wind.
Monday
 
 Mostly cloudy, with a high near 64. Calm wind becoming west around 5 mph.
Monday Night
 
 Showers likely, mainly after 4am. Mostly cloudy, with a low around 49. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
 
 Showers, mainly before 4pm. High near 62. South wind 5 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
 
 A 30 percent chance of showers before 10pm. Areas of fog before midnight. Otherwise, mostly cloudy, with a low around 48. Calm wind.
Wednesday
 
 Mostly sunny, with a high near 64.
Wednesday Night
 
 Mostly cloudy, with a low around 49.
Thursday
 
 Mostly sunny, with a high near 67.
Thursday Night
 
 Partly cloudy, with a low around 49.
Friday
 
 Mostly sunny, with a high near 70.
Friday Night
 
 Partly cloudy, with a low around 50.
Saturday
 
 Sunny, with a high near 72.
Saturday Night
 
 Partly cloudy, with a low around 52.
Sunday
 
 Mostly sunny, with a high near 72.

 

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