Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East

A significant, long-duration winter storm will bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Widespread travel disruptions, prolonged power outages, and vast tree damage is likely. Frigid temperatures, gusty winds, and dangerous wind chills will expand from the north-central US to the Southern Plains, MS Valley, and Midwest. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

48°F

9°C

Humidity 99%
Wind Speed WSW 0 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Last update 23 Jan 04:10 AM PST
Extended Forecast for

Cupertino CA

  • Today

    Today: Patchy dense fog before 10am.  Otherwise, mostly sunny, with a high near 59. Calm wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 59 °F

    Patchy Dense
    Fog then
    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 42. Light northwest wind.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 60. North wind 6 to 9 mph.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 39. West northwest wind around 6 mph becoming calm  in the evening.

    Low: 39 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 60. Light north northeast wind.

    High: 60 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy dense fog before 10am. Otherwise, mostly sunny, with a high near 59. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Tonight
Partly cloudy, with a low around 42. Light northwest wind.
Saturday
Sunny, with a high near 60. North wind 6 to 9 mph.
Saturday Night
Increasing clouds, with a low around 39. West northwest wind around 6 mph becoming calm in the evening.
Sunday
Mostly cloudy, with a high near 60. Light north northeast wind.
Sunday Night
Mostly cloudy, with a low around 43.
Monday
Mostly sunny, with a high near 63.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Mostly sunny, with a high near 64.
Tuesday Night
A slight chance of rain after 4am. Mostly cloudy, with a low around 46.
Wednesday
A slight chance of rain. Partly sunny, with a high near 62.
Wednesday Night
Mostly cloudy, with a low around 44.
Thursday
Mostly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
Cupertino CA
 37.31°N 122.06°W (Elev. 610 ft)
12:26 am PST Jan 23, 2026
4am PST Jan 23, 2026-6pm PST Jan 29, 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