National Weather Service Forecast for: 5 Miles SW Portola Valley CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 2:30 pm PST Dec 23, 2025
 
Tonight

Tonight: Showers, with thunderstorms also possible after 1am. Low around 51. Breezy, with a south southeast wind 15 to 20 mph increasing to 21 to 26 mph after midnight. Winds could gust as high as 55 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and
Breezy
 Wednesday

Wednesday: Showers, with thunderstorms also possible after 4pm. Some of the storms could be severe. High near 59. South southeast wind 8 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers then
Severe
T-Storms
 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm before 10pm, then showers between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Some of the storms could be severe. Steady temperature around 54. Breezy, with a south wind 17 to 22 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Severe
T-Storms
and Breezy
 Christmas
Day
Christmas Day: Showers and possibly a thunderstorm before 7am, then showers between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 56. South wind 18 to 20 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Showers

 Thursday
Night
Thursday Night: Showers and possibly a thunderstorm. Low around 48. South southwest wind 13 to 15 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Showers

 Friday

Friday: Showers. High near 56. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Showers

 Friday
Night
Friday Night: Showers and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms after 10pm. Low around 46. Chance of precipitation is 80%.
Showers then
Chance
Showers
 Saturday

Saturday: A chance of showers. Mostly sunny, with a high near 56.
Chance
Showers
 Saturday
Night
Saturday Night: Mostly clear, with a low around 42.
Mostly Clear
Lo 51 °F Hi 59 °F Lo 54 °F Hi 56 °F Lo 48 °F Hi 56 °F Lo 46 °F Hi 56 °F Lo 42 °F

Flood Watch
Wind Advisory
 

Tonight
 
 Showers, with thunderstorms also possible after 1am. Low around 51. Breezy, with a south southeast wind 15 to 20 mph increasing to 21 to 26 mph after midnight. Winds could gust as high as 55 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
 
 Showers, with thunderstorms also possible after 4pm. Some of the storms could be severe. High near 59. South southeast wind 8 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
 Showers and possibly a thunderstorm before 10pm, then showers between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Some of the storms could be severe. Steady temperature around 54. Breezy, with a south wind 17 to 22 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Christmas Day
 
 Showers and possibly a thunderstorm before 7am, then showers between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 56. South wind 18 to 20 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
 
 Showers and possibly a thunderstorm. Low around 48. South southwest wind 13 to 15 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
 
 Showers. High near 56. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
 
 Showers and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms after 10pm. Low around 46. Chance of precipitation is 80%.
Saturday
 
 A chance of showers. Mostly sunny, with a high near 56.
Saturday Night
 
 Mostly clear, with a low around 42.
Sunday
 
 Sunny, with a high near 57.
Sunday Night
 
 Mostly clear, with a low around 41.
Monday
 
 Sunny, with a high near 59.
Monday Night
 
 Mostly clear, with a low around 44.
Tuesday
 
 Sunny, with a high near 61.

 

Forecast from NOAA-NWS for 5 Miles SW Portola Valley CA.