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

Areas of Severe Thunderstorms and Heavy Rain Possible through the Weekend

There will be daily chances for scattered thunderstorms across portions of the Central and Eastern U.S. through the weekend, with severe thunderstorms possible in the northern Plains and Upper Midwest. Potential severe storm hazards may include large hail, damaging winds, and a few tornadoes. Storms could also produce heavy rain that may lead to isolated instances of flash flooding. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

75°F

24°C

Humidity 56%
Wind Speed E 2 MPH
Barometer NA
Dewpoint 58°F (14°C)
Visibility NA
Last update 28 Jun 10:10 AM PDT
Extended Forecast for

3 Miles NW Portola Valley CA

  • Today

    Today: Sunny, with a high near 86. Calm wind becoming southwest 5 to 9 mph in the afternoon.

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 54. Southwest wind 3 to 8 mph.

    Low: 54 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 86. Calm wind becoming west southwest 5 to 8 mph in the afternoon.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 52. West southwest wind 5 to 9 mph becoming light southwest in the evening.

    Low: 52 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 82. Calm wind becoming west southwest 5 to 8 mph in the afternoon.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 86. Calm wind becoming southwest 5 to 9 mph in the afternoon.
Tonight
Clear, with a low around 54. Southwest wind 3 to 8 mph.
Sunday
Sunny, with a high near 86. Calm wind becoming west southwest 5 to 8 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 52. West southwest wind 5 to 9 mph becoming light southwest in the evening.
Monday
Sunny, with a high near 82. Calm wind becoming west southwest 5 to 8 mph in the afternoon.
Monday Night
Mostly clear, with a low around 51.
Tuesday
Sunny, with a high near 82.
Tuesday Night
Partly cloudy, with a low around 52.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Mostly clear, with a low around 50.
Thursday
Sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 50.
Independence Day
Mostly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Portola Valley CA
 37.41°N 122.26°W (Elev. 535 ft)
Last Update:
1:26 am PDT Jun 28, 2025
Forecast Valid:
10am PDT Jun 28, 2025-6pm PDT Jul 4, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation