High-Impact and Far-Reaching Winter Storm Continues; Cold Expands and Persists

A major winter storm will shift its impacts into the Northeast U.S. with heavy snow through tonight while over the Mid-Atlantic, sleet and freezing rain will diminish. Extremely cold air behind the storm will prolong dangerous travel and infrastructure impacts. Sub-zero low temperatures are expected nearly every morning from the Northern Plains through the Ohio Valley and into the Northeast. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

44°F

7°C

Humidity 84%
Wind Speed WSW 2 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 25 Jan 11:10 PM PST
Extended Forecast for

Cupertino CA

  • Overnight

    Overnight: Partly cloudy, with a low around 43. Light south southwest wind.

    Low: 43 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 63. Light and variable wind.

    High: 63 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 63. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 63 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 10pm.  Mostly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A 20 percent chance of rain before 10am.  Mostly sunny, with a high near 63.

    High: 63 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 43. Light south southwest wind.
Monday
Sunny, with a high near 63. Light and variable wind.
Monday Night
Partly cloudy, with a low around 41. Calm wind.
Tuesday
Mostly sunny, with a high near 63. Calm wind becoming south southwest around 6 mph in the afternoon.
Tuesday Night
A 20 percent chance of rain after 10pm. Mostly cloudy, with a low around 46. Calm wind.
Wednesday
A 20 percent chance of rain before 10am. Mostly sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Partly sunny, with a high near 66.
Friday Night
Mostly cloudy, with a low around 46.
Saturday
Partly sunny, with a high near 66.
Saturday Night
A slight chance of rain. Mostly cloudy, with a low around 47.
Sunday
A slight chance of rain. Partly sunny, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
Cupertino CA
 37.31°N 122.06°W (Elev. 610 ft)
12:26 pm PST Jan 25, 2026
12am PST Jan 26, 2026-6pm PST Feb 1, 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