Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region

Dangerous and extreme heat will remain across portions of the southern U.S. this week. Heavy rainfall may bring significant flash flooding across portions of the Mid-Atlantic and Northeast through the night, and additional flash flooding concerns across New England on Wednesday. Monsoonal thunderstorms will bring a flash flood risk to the Four Corners region, especially in burn scar areas Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

66°F

19°C

Humidity 66%
Wind Speed ESE 1 MPH
Barometer NA
Dewpoint 54°F (12°C)
Visibility NA
Last update 28 Jul 09:10 PM PDT
Extended Forecast for

2 Miles SSW Cupertino CA

  • Tonight

    Tonight: Mostly clear, with a low around 56. North northwest wind around 5 mph becoming calm  in the evening.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Patchy fog before 8am.  Otherwise, sunny, with a high near 84. Calm wind becoming north 5 to 8 mph in the afternoon.

    High: 84 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 55. Northwest wind around 6 mph becoming calm  in the evening.

    Low: 55 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 87. Calm wind becoming west northwest 5 to 8 mph in the afternoon.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56. West northwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 56. North northwest wind around 5 mph becoming calm in the evening.
Wednesday
Patchy fog before 8am. Otherwise, sunny, with a high near 84. Calm wind becoming north 5 to 8 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 55. Northwest wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 87. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 56. West northwest wind 5 to 8 mph becoming calm in the evening.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 90.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 56.
Monday
Sunny, with a high near 87.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Cupertino CA
 37.28°N 122.06°W (Elev. 666 ft)
1:26 pm PDT Jul 28, 2026
9pm PDT Jul 28, 2026-6pm PDT Aug 4, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database