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

Dangerous Heat to Continue through the Holiday Weekend; Severe Storms on Friday from the Plains to the Mid-Atlantic

Dangerous, record-breaking heat will continue across most of the central and eastern U.S through Friday then focusing across the eastern U.S. through the Independence Day holiday weekend. Peak heat indices of up to 115 degrees are possible. Isolated to scattered severe thunderstorms are possible from the northern/central Plains into the Midwest, Ohio Valley, and Mid-Atlantic Friday. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

57°F

14°C

Humidity 89%
Wind Speed SSE 0 MPH
Barometer NA
Dewpoint 54°F (12°C)
Visibility NA
Last update 02 Jul 11:10 PM PDT
Extended Forecast for

Portola Valley CA

  • Tonight

    Tonight: Mostly clear, with a low around 52. Calm wind.

    Low: 52 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 81. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 53. Light southwest wind.

    Low: 53 °F

    Mostly Clear

  • Independence Day

    Independence Day: Increasing clouds, with a high near 81. Calm wind becoming west around 5 mph in the afternoon.

    High: 81 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 54. West wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 54 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 52. Calm wind.
Friday
Sunny, with a high near 81. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 53. Light southwest wind.
Independence Day
Increasing clouds, with a high near 81. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 54. West wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 54.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 74.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 51.
Wednesday
Mostly sunny, with a high near 77.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 53.
Thursday
Patchy fog. Otherwise, mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portola Valley CA
 37.39°N 122.23°W (Elev. 397 ft)
Last Update:
11:27 pm PDT Jul 2, 2026
Forecast Valid:
11pm PDT Jul 2, 2026-6pm PDT Jul 9, 2026
 
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