Regional Outbreaks of Severe Weather Through Early Next Week; Early Season Heat Wave across the South

Active spring pattern across the center of our nation with several episodes of severe weather and heavy rainfall expected into next week. The potential for very large hail, long track tornadoes, severe wind gusts, frequent cloud to ground lightning strikes and flash flooding are in the outlook. Furthermore, dangerous early season heat wave continues for the Gulf Coast states into early next week. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

76°F

24°C

Humidity 46%
Wind Speed NNE 3 MPH
Barometer NA
Dewpoint 54°F (12°C)
Visibility NA
Heat Index78°F (26°C)
Last update 16 May 02:10 PM PDT
Extended Forecast for

3 Miles NNW Portola Valley CA

  • Tonight

    Tonight: Increasing clouds, with a low around 50. West wind 9 to 13 mph, with gusts as high as 24 mph.

    Low: 50 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 66. Breezy, with a west wind 15 to 23 mph, with gusts as high as 36 mph.

    High: 66 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 48. West wind 16 to 21 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 36 mph.

    Low: 48 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 72. West northwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 72 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 48. West northwest wind 16 to 21 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 32 mph.

    Low: 48 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 50.

    Low: 50 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 49.

    Low: 49 °F

    Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 50. West wind 9 to 13 mph, with gusts as high as 24 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 66. Breezy, with a west wind 15 to 23 mph, with gusts as high as 36 mph.
Saturday Night
Mostly clear, with a low around 48. West wind 16 to 21 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 36 mph.
Sunday
Sunny, with a high near 72. West northwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
Clear, with a low around 48. West northwest wind 16 to 21 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 32 mph.
Monday
Sunny, with a high near 79.
Monday Night
Clear, with a low around 50.
Tuesday
Sunny, with a high near 78.
Tuesday Night
Clear, with a low around 49.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Clear, with a low around 51.
Thursday
Sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 49.
Friday
Sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Portola Valley CA
 37.42°N 122.23°W (Elev. 397 ft)
1:25 pm PDT May 16, 2025
3pm PDT May 16, 2025-6pm PDT May 23, 2025
 
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Additional Resources

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