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

Record Breaking Temperatures and Critical Fire Weather

More than 200 record or near record maximum temperatures are forecast across the southern half of the U.S. through the end of this week before additional record temperatures center back over the Southwest U.S. into the Rockies this weekend. Widespread record breaking warmth, low humidity, and gusty winds will produce critical fire weather today in the central Rockies to Plains. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

78°F

26°C

Humidity 47%
Wind Speed NW 2 MPH
Barometer NA
Dewpoint 56°F (13°C)
Visibility NA
Heat Index79°F (26°C)
Last update 25 Mar 03:10 PM PDT
Extended Forecast for

Cupertino CA

  • Tonight

    Tonight: Partly cloudy, with a low around 46. Northwest wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 21 mph.

    Low: 46 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 75. Calm wind becoming north 5 to 8 mph in the morning.

    High: 75 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 52. North northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 80. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 80 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 49. Northwest wind around 6 mph becoming calm in the evening.

    Low: 49 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Sunday Night

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

    Low: 53 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 46. Northwest wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 21 mph.
Thursday
Mostly sunny, with a high near 75. Calm wind becoming north 5 to 8 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 52. North northwest wind 5 to 8 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 80. Calm wind becoming northwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 49. Northwest wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 53.
Monday
Mostly cloudy, with a high near 73.
Monday Night
A chance of rain. Mostly cloudy, with a low around 51.
Tuesday
A chance of rain. Mostly cloudy, with a high near 66.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 49.
Wednesday
Rain likely. Mostly cloudy, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cupertino CA
 37.31°N 122.06°W (Elev. 610 ft)
Last Update:
2:41 pm PDT Mar 25, 2026
Forecast Valid:
3pm PDT Mar 25, 2026-6pm PDT Apr 1, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation