Isolated Severe Storms in the Midwest; Fire Weather Concerns in the Northern Plains; Record Heat in the West

Isolated severe storms are possible across parts of the Florida Peninsula and the Great Lakes to Lower Missouri Valley and south-central Plains late this afternoon and early evening. Elevated to critical fire weather concerns continue over much of the northern Great Plains. Above average temperatures persist across portions of the West today. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

55°F

13°C

Humidity 97%
Wind Speed NE 0 MPH
Barometer NA
Dewpoint 54°F (12°C)
Visibility NA
Last update 12 May 07:10 AM PDT
Extended Forecast for

Cupertino CA

  • Today

    Today: Mostly sunny, with a high near 77. Calm wind becoming north 5 to 9 mph in the afternoon.

    High: 77 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 52. Northwest wind 5 to 9 mph becoming west southwest after midnight.

    Low: 52 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72. Northwest wind 5 to 11 mph, with gusts as high as 21 mph.

    High: 72 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 49. West northwest wind 6 to 11 mph becoming light west  after midnight. Winds could gust as high as 20 mph.

    Low: 49 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. Calm wind becoming northwest 5 to 9 mph in the afternoon.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Friday Night

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

    Low: 50 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 77. Calm wind becoming north 5 to 9 mph in the afternoon.
Tonight
Partly cloudy, with a low around 52. Northwest wind 5 to 9 mph becoming west southwest after midnight.
Wednesday
Mostly sunny, with a high near 72. Northwest wind 5 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 49. West northwest wind 6 to 11 mph becoming light west after midnight. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 82. Calm wind becoming northwest 5 to 9 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 51.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 50.
Saturday
Sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 49.
Sunday
Sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 52.
Monday
Sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Cupertino CA
 37.33°N 122.07°W (Elev. 305 ft)
2:16 am PDT May 12, 2026
8am PDT May 12, 2026-6pm PDT May 18, 2026
 
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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