Prolonged Extreme Cold; Eastern U.S. Winter Storm

Another Arctic blast will surge south across the northern Plains tonight, crossing the Midwest and reaching the Gulf Coast Friday night. Dangerously cold temperatures will persist across the eastern U.S. into early February. There is increasing confidence for significant heavy snow across much of the Southern Appalachians, Carolinas, and southern Mid-Atlantic Friday into Sunday. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

68°F

20°C

Humidity 43%
Wind Speed WSW 0 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 29 Jan 04:10 PM PST
Extended Forecast for

5 Miles WSW Cupertino CA

  • Tonight

    Tonight: Partly cloudy, with a low around 50. North wind 3 to 5 mph.

    Low: 50 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 65. East southeast wind around 5 mph becoming calm  in the morning.

    High: 65 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53. East wind around 5 mph.

    Low: 53 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 68. East wind around 6 mph becoming calm  in the afternoon.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 50. Light and variable wind.

    Low: 50 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 47.

    Low: 47 °F

    Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 50. North wind 3 to 5 mph.
Friday
Mostly sunny, with a high near 65. East southeast wind around 5 mph becoming calm in the morning.
Friday Night
Partly cloudy, with a low around 53. East wind around 5 mph.
Saturday
Mostly sunny, with a high near 68. East wind around 6 mph becoming calm in the afternoon.
Saturday Night
Partly cloudy, with a low around 50. Light and variable wind.
Sunday
Partly sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 48.
Monday
Sunny, with a high near 62.
Monday Night
Clear, with a low around 47.
Tuesday
Sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Sunny, with a high near 67.
Wednesday Night
Mostly clear, with a low around 51.
Thursday
Sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Cupertino CA
 37.29°N 122.14°W (Elev. 1798 ft)
12:27 pm PST Jan 29, 2026
5pm PST Jan 29, 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