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Areas of Hazardous Weather This Weekend

A series of cold fronts from North Pacific storms will bring periods of gusty winds, low elevation rainfall, and high elevation snow to the Pacific Northwest this weekend into next week. Heavy to excessive rainfall may produce areas of flooding over southern Texas this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

LOS ALTOS (LOAC1)

Lat: 37.35472°NLon: 122.14167°WElev: 539.0ft.

NA

70°F

21°C

Humidity 42%
Wind Speed ENE 2 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 07 Nov 10:10 AM PST
Extended Forecast for

Portola Valley CA

Coastal Flood Advisory November 7, 10:28am until November 13, 04:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory November 7, 10:28am until November 13, 04:00pm

    NOW until 4:00pm Fri

    Coastal Flood Advisory

  • Today

    High: 76 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 52. West wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Partly Cloudy

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 73. Light north wind.

    High: 73 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 52. Light north northeast wind.

    Low: 52 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 74. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 76. Light and variable wind.
Tonight
Partly cloudy, with a low around 52. West wind around 5 mph becoming calm in the evening.
Sunday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 73. Light north wind.
Sunday Night
Mostly cloudy, with a low around 52. Light north northeast wind.
Monday
Mostly sunny, with a high near 74. Calm wind becoming north northwest around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 53.
Veterans Day
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
A slight chance of rain. Partly cloudy, with a low around 53.
Friday
A chance of rain. Partly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portola Valley CA
 37.37°N 122.22°W (Elev. 597 ft)
Last Update:
10:23 am PST Nov 7, 2026
Forecast Valid:
10am PST Nov 7, 2026-6pm PST Nov 13, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation