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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

57°F

14°C

Humidity 75%
Wind Speed S 0 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Last update 08 Nov 08:10 AM PST
Extended Forecast for

Portola Valley CA

Coastal Flood Advisory November 8, 08:56am until November 13, 04:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory November 8, 08:56am until November 13, 04:00pm

    NOW until 4:00pm Fri

    Coastal Flood Advisory

  • Today

    High: 73 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 52. Light and variable wind.

    Low: 52 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 73. Calm wind becoming north around 6 mph in the afternoon.

    High: 73 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 53. Northwest wind around 6 mph becoming calm in the evening.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 76. Calm wind.

    High: 76 °F

    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 78.

    High: 78 °F

    Sunny

  • Wednesday Night

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

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Today
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 73. Calm wind.
Tonight
Partly cloudy, with a low around 52. Light and variable wind.
Monday
Partly sunny, with a high near 73. Calm wind becoming north around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 53. Northwest wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 76. Calm wind.
Tuesday Night
Mostly clear, with a low around 52.
Veterans Day
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
Mostly sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 54.
Friday
A slight chance of rain. Mostly sunny, with a high near 69.
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 67.
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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:
8:42 am PST Nov 8, 2026
Forecast Valid:
8am PST Nov 8, 2026-6pm PST Nov 14, 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