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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

53°F

12°C

Humidity 65%
Wind Speed WSW 1 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 07 Nov 09:10 PM PST
Extended Forecast for

Portola Valley CA

Coastal Flood Advisory November 7, 09:47pm until November 13, 04:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory November 7, 09:47pm until November 13, 04:00pm

    NOW until 4:00pm Fri

    Coastal Flood Advisory

  • Tonight

    Low: 52 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 74. Light north wind.

    High: 74 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 52. Calm wind.

    Low: 52 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 75. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 75 °F

    Partly Sunny

  • Monday Night

    Monday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 52. Northwest wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, sunny, with a high near 77.

    High: 77 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Sunny, with a high near 80.

    High: 80 °F

    Sunny

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, increasing clouds, 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 74. Light north wind.
Sunday Night
Partly cloudy, with a low around 52. Calm wind.
Monday
Partly sunny, with a high near 75. Calm wind becoming north northwest around 6 mph in the afternoon.
Monday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 52. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
Patchy fog before 8am. Otherwise, sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 50.
Veterans Day
Sunny, with a high near 80.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
A slight chance of rain. Partly cloudy, with a low around 52.
Friday
A slight chance of rain. Mostly sunny, with a high near 71.
Friday Night
A slight chance of rain. Partly cloudy, with a low around 52.
Saturday
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
 37.39°N 122.23°W (Elev. 397 ft)
Last Update:
9:21 pm PST Nov 7, 2026
Forecast Valid:
9pm PST Nov 7, 2026-6pm PST Nov 14, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation