Severe Weather and Heavy Rain from the Ohio Valley to the Mid-Atlantic; Heat Persists in the South-Central U.S.

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected across portions of the Ohio Valley into southern Mid-Atlantic and Carolinas. Rounds of strong thunderstorms are expected to develop across the northern and central Plains. Sweltering heat remains most persistent across the South-Central Plains and Lower/Middle Mississippi Valley through next week. Read More >

Current conditions at

Mountain View, Moffett Field (KNUQ)

Lat: 37.40583°NLon: 122.04806°WElev: 33.0ft.

Mostly Cloudy

75°F

24°C

Humidity 41%
Wind Speed N 13 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 05 Sep 01:35 PM PDT
Extended Forecast for

Cupertino CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 77. North northwest wind 8 to 11 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 56. North northwest wind 5 to 9 mph becoming calm  after midnight.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 77. Light and variable wind becoming north northwest 6 to 11 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 77 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55. Northwest wind 5 to 10 mph becoming light west northwest  in the evening. Winds could gust as high as 18 mph.

    Low: 55 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 83. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of rain after 11am.  Mostly sunny, with a high near 86.

    High: 86 °F

    Slight Chance
    Rain

  • Tuesday Night

    Tuesday Night: A slight chance of rain before 11pm.  Mostly cloudy, with a low around 64.

    Low: 64 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 89.

    High: 89 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 77. North northwest wind 8 to 11 mph.
Tonight
Mostly clear, with a low around 56. North northwest wind 5 to 9 mph becoming calm after midnight.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 77. Light and variable wind becoming north northwest 6 to 11 mph in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Mostly clear, with a low around 55. Northwest wind 5 to 10 mph becoming light west northwest in the evening. Winds could gust as high as 18 mph.
Labor Day
Sunny, with a high near 83. Calm wind becoming north northwest around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 60.
Tuesday
A 20 percent chance of rain after 11am. Mostly sunny, with a high near 86.
Tuesday Night
A slight chance of rain before 11pm. Mostly cloudy, with a low around 64.
Wednesday
Partly sunny, with a high near 89.
Wednesday Night
Partly cloudy, with a low around 68.
Thursday
Sunny, with a high near 88.
Thursday Night
Mostly clear, with a low around 64.
Friday
Mostly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
Cupertino CA
 37.33°N 122.04°W (Elev. 243 ft)
1:25 pm PDT Sep 5, 2026
1pm PDT Sep 5, 2026-6pm PDT Sep 11, 2026
 
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Additional Resources

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Hourly Weather Forecast

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