Heavy Rain and Flooding Threat in the Central U.S.; Winter Weather in Northern Alaska

Strong thunderstorms and heavy rain may produce flash flooding across the south-central Plains and lower Mississippi Valley today. The North Slope in Alaska will see the potential for wintry weather through today with ice accumulations possible on roadways. Incoming storms will bring long duration rainfall and strong winds to most of Southcentral Alaska through Friday. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

79°F

26°C

Humidity 50%
Wind Speed NE 2 MPH
Barometer NA
Dewpoint 59°F (15°C)
Visibility NA
Heat Index80°F (27°C)
Last update 28 Aug 01:10 PM PDT
Extended Forecast for

3 Miles NW Portola Valley CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 85. Light and variable wind becoming west northwest around 5 mph.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 54. Light west northwest wind.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85. Calm wind becoming north northeast around 6 mph in the afternoon.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 55. North northwest wind around 5 mph becoming calm  in the evening.

    Low: 55 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 87. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 87 °F

    Sunny

  • Saturday Night

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

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 84.

    High: 84 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 85. Light and variable wind becoming west northwest around 5 mph.
Tonight
Mostly clear, with a low around 54. Light west northwest wind.
Friday
Sunny, with a high near 85. Calm wind becoming north northeast around 6 mph in the afternoon.
Friday Night
Clear, with a low around 55. North northwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 87. Calm wind becoming west northwest around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 86.
Sunday Night
Mostly clear, with a low around 55.
Labor Day
Sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
Sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Portola Valley CA
 37.41°N 122.26°W (Elev. 535 ft)
1:31 pm PDT Aug 28, 2025
1pm PDT Aug 28, 2025-6pm PDT Sep 3, 2025
 
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Additional Resources

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Hourly Weather Forecast

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