Powerful Winter Storm from the Upper Midwest into the Northeast; Severe Thunderstorms in the Midwest and Ohio Valley

A rapidly-intensifying storm is expected to bring heavy snow, blizzard conditions, and icing from the Upper Midwest through the Great Lakes and Northeast. Scattered severe thunderstorms may produce severe/damaging wind gusts and a couple of tornadoes across parts of the Midwest and lower Ohio Valley through the evening. Arctic air will expand across the central and southern U.S.. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

59°F

15°C

Humidity 49%
Wind Speed SE 1 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 28 Dec 03:10 PM PST
Extended Forecast for

5 Miles WSW Cupertino CA

  • Tonight

    Tonight: Mostly clear, with a low around 40. North northeast wind 5 to 7 mph.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 58. North northeast wind 3 to 7 mph.

    High: 58 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 44. East northeast wind 3 to 6 mph.

    Low: 44 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 59. East northeast wind around 6 mph becoming calm  in the afternoon.

    High: 59 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 47. East wind 3 to 6 mph.

    Low: 47 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of rain after 10am.  Mostly sunny, with a high near 57.

    High: 57 °F

    Slight Chance
    Rain

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain.  Mostly cloudy, with a low around 49.

    Low: 49 °F

    Chance Rain

  • New Year's Day

    New Year's Day: Rain likely, mainly after 10am.  Mostly cloudy, with a high near 56.

    High: 56 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely.  Mostly cloudy, with a low around 52.

    Low: 52 °F

    Rain Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 40. North northeast wind 5 to 7 mph.
Monday
Sunny, with a high near 58. North northeast wind 3 to 7 mph.
Monday Night
Clear, with a low around 44. East northeast wind 3 to 6 mph.
Tuesday
Sunny, with a high near 59. East northeast wind around 6 mph becoming calm in the afternoon.
Tuesday Night
Partly cloudy, with a low around 47. East wind 3 to 6 mph.
Wednesday
A 20 percent chance of rain after 10am. Mostly sunny, with a high near 57.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 49.
New Year's Day
Rain likely, mainly after 10am. Mostly cloudy, with a high near 56.
Thursday Night
Rain likely. Mostly cloudy, with a low around 52.
Friday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 57.
Friday Night
A chance of rain. Mostly cloudy, with a low around 49.
Saturday
A chance of rain. Mostly cloudy, with a high near 56.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 49.
Sunday
A chance of rain. Partly sunny, with a high near 56.
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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 Dec 28, 2025
3pm PST Dec 28, 2025-6pm PST Jan 4, 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