Dangerous Surf and Rip Currents for most of the Atlantic Shoreline; Record Heat for the West

Hurricane Erin continues to track northward. Tropical storm force winds, storm surge conditions will increase for the Outer Banks today and portions of coastal Virginia. Life-threatening surf and rip currents along much of the east coast of the U.S. this week. Major to extreme HeatRisk with new record high temperatures are expected for many areas of the western U.S. this week. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

88°F

31°C

Humidity 33%
Wind Speed NNE 2 MPH
Barometer NA
Dewpoint 55°F (13°C)
Visibility NA
Heat Index86°F (30°C)
Last update 20 Aug 12:10 PM PDT
Extended Forecast for

3 Miles SSE Portola Valley CA

Heat Advisory August 21, 10:00am until August 22, 10:00pm
Click here for hazard details and duration
Heat Advisory
  • This Afternoon

    This Afternoon: Sunny, with a high near 83. Northwest wind 3 to 7 mph.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 67. Northwest wind 3 to 6 mph.

    Low: 67 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 88. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 67. West wind around 5 mph.

    Low: 67 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 82. West northwest wind 3 to 5 mph.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 83. Northwest wind 3 to 7 mph.
Tonight
Mostly clear, with a low around 67. Northwest wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 88. Calm wind becoming northwest around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 67. West wind around 5 mph.
Friday
Sunny, with a high near 82. West northwest wind 3 to 5 mph.
Friday Night
Mostly clear, with a low around 63.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 62.
Sunday
Sunny, with a high near 79.
Sunday Night
Mostly clear, with a low around 61.
Monday
Sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Sunny, with a high near 76.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Portola Valley CA
 37.33°N 122.18°W (Elev. 1998 ft)
12:09 pm PDT Aug 20, 2025
12pm PDT Aug 20, 2025-6pm PDT Aug 26, 2025
 
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