Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

67°F

19°C

Humidity 69%
Wind Speed NNE 0 MPH
Barometer NA
Dewpoint 56°F (13°C)
Visibility NA
Last update 26 Aug 10:10 PM PDT
Extended Forecast for

2 Miles NNE Portola Valley CA

  • Tonight

    Tonight: Mostly clear, with a low around 60. Light south wind.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers after 11am.  Increasing clouds, with a high near 86. Calm wind becoming north northeast around 5 mph.

    High: 86 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers.  Mostly cloudy, with a low around 60. South southwest wind around 5 mph becoming calm  after midnight.

    Low: 60 °F

    Slight Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers.  Cloudy, with a high near 79. Light and variable wind.

    High: 79 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 54. Calm wind becoming west northwest around 5 mph.

    Low: 54 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 60. Light south wind.
Thursday
A 20 percent chance of showers after 11am. Increasing clouds, with a high near 86. Calm wind becoming north northeast around 5 mph.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 60. South southwest wind around 5 mph becoming calm after midnight.
Friday
A 20 percent chance of showers. Cloudy, with a high near 79. Light and variable wind.
Friday Night
Partly cloudy, with a low around 54. Calm wind becoming west northwest around 5 mph.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 52.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 53.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Portola Valley CA
 37.4°N 122.2°W (Elev. 397 ft)
8:29 pm PDT Aug 26, 2026
10pm PDT Aug 26, 2026-6pm PDT Sep 2, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database