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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

73°F

23°C

Humidity 47%
Wind Speed E 1 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Last update 07 Nov 03:10 PM PST
Extended Forecast for

Portola Valley CA

Coastal Flood Advisory November 7, 04:04pm until November 13, 04:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory November 7, 04:04pm 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 75. Light north wind.

    High: 75 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 51. Calm wind.

    Low: 51 °F

    Mostly Cloudy

  • Monday

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

    High: 75 °F

    Mostly 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 76.

    High: 76 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 52.

    Low: 52 °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, partly cloudy, with a low around 52. Calm wind becoming west northwest around 5 mph.
Sunday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 75. Light north wind.
Sunday Night
Mostly cloudy, with a low around 51. Calm wind.
Monday
Mostly 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 76.
Tuesday Night
Mostly clear, with a low around 52.
Veterans Day
Sunny, with a high near 80.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
A slight chance of rain. Partly cloudy, with a low around 52.
Friday
A chance of rain. Partly sunny, with a high near 71.
Friday Night
A chance of rain. Mostly 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:
12:26 pm PST Nov 7, 2026
Forecast Valid:
4pm 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