Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

53°F

12°C

Humidity 82%
Wind Speed SE 1 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Last update 10 Dec 10:10 AM PST
Extended Forecast for

5 Miles WSW Cupertino CA

  • Today

    Today: Sunny, with a high near 66. North northeast wind 3 to 6 mph.

    High: 66 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 54. North northeast wind around 6 mph.

    Low: 54 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 66. North northeast wind 3 to 6 mph.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 50. East northeast wind 3 to 5 mph.

    Low: 50 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 65. East northeast wind around 5 mph becoming calm  in the morning.

    High: 65 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 66. North northeast wind 3 to 6 mph.
Tonight
Clear, with a low around 54. North northeast wind around 6 mph.
Thursday
Sunny, with a high near 66. North northeast wind 3 to 6 mph.
Thursday Night
Clear, with a low around 50. East northeast wind 3 to 5 mph.
Friday
Sunny, with a high near 65. East northeast wind around 5 mph becoming calm in the morning.
Friday Night
Mostly clear, with a low around 49.
Saturday
Sunny, with a high near 63.
Saturday Night
Mostly clear, with a low around 47.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 49.
Monday
Partly sunny, with a high near 61.
Monday Night
A chance of rain. Mostly cloudy, with a low around 52.
Tuesday
A chance of rain. Partly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Cupertino CA
 37.29°N 122.14°W (Elev. 1798 ft)
12:26 am PST Dec 10, 2025
10am PST Dec 10, 2025-6pm PST Dec 16, 2025
 
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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