Prolonged Extreme Cold; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the Gulf Coast, upper Ohio Valley, Mid-Atlantic, and Southeast U.S. into this weekend. A rapidly deepening storm centered just off the North Carolina coast Friday night through Saturday night will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

48°F

9°C

Humidity 67%
Wind Speed WSW 3 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 30 Jan 05:10 AM PST
Extended Forecast for

Cupertino CA

  • Today

    Today: Mostly sunny, with a high near 69. Light and variable wind.

    High: 69 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 71. Calm wind.

    High: 71 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 64. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 64 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 44.

    Low: 44 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 69. Light and variable wind.
Tonight
Partly cloudy, with a low around 46. Calm wind.
Saturday
Partly sunny, with a high near 71. Calm wind.
Saturday Night
Partly cloudy, with a low around 45. Calm wind.
Sunday
Partly sunny, with a high near 64. Calm wind becoming northwest around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Sunny, with a high near 65.
Monday Night
Clear, with a low around 44.
Tuesday
Sunny, with a high near 68.
Tuesday Night
Clear, with a low around 45.
Wednesday
Sunny, with a high near 71.
Wednesday Night
Clear, with a low around 47.
Thursday
Sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Cupertino CA
 37.31°N 122.06°W (Elev. 610 ft)
4:31 am PST Jan 30, 2026
5am PST Jan 30, 2026-6pm PST Feb 5, 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