National Weather Service Forecast for: 5 Miles SW Portola Valley CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 1:24 pm PST Dec 17, 2025
 
Tonight

Tonight: Partly cloudy, with a low around 47. Calm wind.
Partly Cloudy
 Thursday

Thursday: Mostly sunny, with a high near 63. Light and variable wind.
Mostly Sunny
 Thursday
Night
Thursday Night: A 30 percent chance of rain, mainly after 10pm. Mostly cloudy, with a steady temperature around 54. Calm wind.
Chance Rain
 Friday

Friday: Rain, mainly after 10am. High near 62. Calm wind becoming south southwest 5 to 7 mph in the morning. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Rain
 Friday
Night
Friday Night: Rain, mainly before 4am. Low around 54. Light south southwest wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain
 Saturday

Saturday: Rain, mainly after 10am. High near 62. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain
 Saturday
Night
Saturday Night: Rain before 10pm, then showers and possibly a thunderstorm after 10pm. Low around 55. Chance of precipitation is 90%.
Showers
 Sunday

Sunday: Showers and possibly a thunderstorm. Cloudy, with a high near 61.
Showers
 Sunday
Night
Sunday Night: Rain. Cloudy, with a low around 53.
Rain
Lo 47 °F Hi 63 °F Lo 54 °F Hi 62 °F Lo 54 °F Hi 62 °F Lo 55 °F Hi 61 °F Lo 53 °F

 

Tonight
 
 Partly cloudy, with a low around 47. Calm wind.
Thursday
 
 Mostly sunny, with a high near 63. Light and variable wind.
Thursday Night
 
 A 30 percent chance of rain, mainly after 10pm. Mostly cloudy, with a steady temperature around 54. Calm wind.
Friday
 
 Rain, mainly after 10am. High near 62. Calm wind becoming south southwest 5 to 7 mph in the morning. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
 
 Rain, mainly before 4am. Low around 54. Light south southwest wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
 
 Rain, mainly after 10am. High near 62. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
 
 Rain before 10pm, then showers and possibly a thunderstorm after 10pm. Low around 55. Chance of precipitation is 90%.
Sunday
 
 Showers and possibly a thunderstorm. Cloudy, with a high near 61.
Sunday Night
 
 Rain. Cloudy, with a low around 53.
Monday
 
 Rain likely. Mostly cloudy, with a high near 60.
Monday Night
 
 Rain likely. Mostly cloudy, with a low around 50.
Tuesday
 
 Rain likely. Mostly cloudy, with a high near 58.
Tuesday Night
 
 Rain. Cloudy, with a low around 51.
Wednesday
 
 Rain likely. Mostly cloudy, with a high near 59.

 

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