Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

53°F

12°C

Humidity 98%
Wind Speed WSW 3 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Last update 04 Sep 07:10 AM PDT
Extended Forecast for

5 Miles WSW Cupertino CA

  • Today

    Today: Sunny, with a high near 73. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 52. West northwest wind around 6 mph becoming calm  in the evening.

    Low: 52 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 76. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 52. Northwest wind around 6 mph becoming calm  in the evening.

    Low: 52 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 73. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 73 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 73. Calm wind becoming west northwest around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 52. West northwest wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 76. Calm wind becoming northwest around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 52. Northwest wind around 6 mph becoming calm in the evening.
Sunday
Sunny, with a high near 73. Calm wind becoming west northwest around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 52.
Labor Day
Sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 61.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
A slight chance of rain after 11pm. Partly cloudy, with a low around 64.
Wednesday
A slight chance of rain. Mostly sunny, with a high near 83.
Wednesday Night
A slight chance of rain. Partly cloudy, with a low around 67.
Thursday
Mostly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Cupertino CA
 37.28°N 122.11°W (Elev. 1004 ft)
2:57 am PDT Sep 4, 2026
8am PDT Sep 4, 2026-6pm PDT Sep 10, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database