Heavy to Excessive Rainfall and Flooding Threats in the Central and Eastern U.S.; Heat and Fire Weather Concerns in the West

Thunderstorms producing excessive rainfall and potential flooding concerns will continue through tonight from the Southern Plains to the East Coast. Areas of greatest concern for flooding are over central Texas and the Mid-Atlantic. Heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue through Monday. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

84°F

29°C

Humidity 44%
Wind Speed WNW 2 MPH
Barometer NA
Dewpoint 60°F (16°C)
Visibility NA
Heat Index84°F (29°C)
Last update 13 Jul 03:10 PM PDT
Extended Forecast for

2 Miles NNE Portola Valley CA

  • Tonight

    Tonight: Increasing clouds, with a low around 54. West wind around 6 mph becoming calm  in the evening.

    Low: 54 °F

    Increasing
    Clouds

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 86. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 86 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 53. West southwest wind around 5 mph becoming calm  in the evening.

    Low: 53 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 82. Calm wind becoming west southwest 5 to 8 mph in the afternoon.

    High: 82 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 54. West southwest wind 5 to 9 mph.

    Low: 54 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 54. West wind around 6 mph becoming calm in the evening.
Monday
Partly sunny, then gradually becoming sunny, with a high near 86. Calm wind becoming north northwest around 6 mph in the afternoon.
Monday Night
Increasing clouds, with a low around 53. West southwest wind around 5 mph becoming calm in the evening.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 82. Calm wind becoming west southwest 5 to 8 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 54. West southwest wind 5 to 9 mph.
Wednesday
Mostly sunny, with a high near 80.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 81.
Friday Night
Patchy fog. Otherwise, mostly clear, with a low around 53.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 53.
Sunday
Sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Portola Valley CA
 37.4°N 122.2°W (Elev. 397 ft)
2:42 pm PDT Jul 13, 2025
3pm PDT Jul 13, 2025-6pm PDT Jul 20, 2025
 
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Additional Resources

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