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

Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Mountain View, Moffett Field (KNUQ)

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

Clear

64°F

18°C

Humidity 72%
Wind Speed N 11 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 21 Aug 08:35 PM PDT
Extended Forecast for

Cupertino CA

  • Tonight

    Tonight: Partly cloudy, with a low around 58. North wind around 6 mph becoming calm after midnight.

    Low: 58 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 82. Light north wind increasing to 5 to 10 mph in the morning.

    High: 82 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 59. North northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 59 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 82. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 82 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 59. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 59 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 58. North wind around 6 mph becoming calm after midnight.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 82. Light north wind increasing to 5 to 10 mph in the morning.
Saturday Night
Increasing clouds, with a low around 59. North northwest wind 5 to 7 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 82. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 59. Northwest wind 5 to 7 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cupertino CA
 37.33°N 122.04°W (Elev. 243 ft)
Last Update:
8:22 pm PDT Aug 21, 2026
Forecast Valid:
9pm PDT Aug 21, 2026-6pm PDT Aug 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation