National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

LOS ALTOS (LOAC1)

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

NA

70°F

21°C

Humidity 43%
Wind Speed NW 1 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 07 Oct 12:10 AM PDT
Extended Forecast for

2 Miles ESE Portola Valley CA

Heat Advisory October 7, 01:14am until October 8, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory October 7, 01:14am until October 8, 10:00pm

    NOW until 10:00pm Thu

    Heat Advisory

  • Overnight

    Low: 65 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93. Calm wind becoming north around 6 mph in the afternoon.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 63. Calm wind.

    Low: 63 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 90. Light north wind.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61. Calm wind.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

Detailed Forecast

Overnight
Clear, with a low around 65. Calm wind.
Wednesday
Sunny, with a high near 93. Calm wind becoming north around 6 mph in the afternoon.
Wednesday Night
Clear, with a low around 63. Calm wind.
Thursday
Sunny, with a high near 90. Light north wind.
Thursday Night
Mostly clear, with a low around 61. Calm wind.
Friday
Sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 56.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
Mostly clear, with a low around 48.
Sunday
Sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 48.
Columbus Day
Sunny, with a high near 71.
Monday Night
Mostly clear, with a low around 49.
Tuesday
Sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Portola Valley CA
 37.35°N 122.19°W (Elev. 1220 ft)
Last Update:
11:56 pm PDT Oct 6, 2026
Forecast Valid:
1am PDT Oct 7, 2026-6pm PDT Oct 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation