Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

Nevada County Air Park (KGOO)

Lat: 39.224028°NLon: 121.003083°WElev: 3154.0ft.

Clear

55°F

13°C

Humidity 35%
Wind Speed N 0 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 09 Dec 11:35 PM PST
Extended Forecast for

Alta Sierra CA

  • Tonight

    Tonight: Widespread haze between 2am and 3am. Clear, with a steady temperature around 47. Calm wind.

    Low: 47 °F

    Haze

  • Wednesday

    Wednesday: Widespread haze before 11am. Sunny, with a high near 62. Calm wind.

    High: 62 °F

    Haze then
    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 44. Calm wind.

    Low: 44 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 63. Calm wind.

    High: 63 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 43. Calm wind.

    Low: 43 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 43.

    Low: 43 °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 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
Widespread haze between 2am and 3am. Clear, with a steady temperature around 47. Calm wind.
Wednesday
Widespread haze before 11am. Sunny, with a high near 62. Calm wind.
Wednesday Night
Clear, with a low around 44. Calm wind.
Thursday
Sunny, with a high near 63. Calm wind.
Thursday Night
Clear, with a low around 43. Calm wind.
Friday
Sunny, with a high near 64.
Friday Night
Mostly clear, with a low around 43.
Saturday
Sunny, with a high near 63.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 41.
Monday
A slight chance of showers. Partly sunny, with a high near 58.
Monday Night
A chance of showers. Mostly cloudy, with a low around 45.
Tuesday
A chance of showers. Partly sunny, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
Alta Sierra CA
 39.14°N 121.05°W (Elev. 2195 ft)
1:21 pm PST Dec 9, 2025
11pm PST Dec 9, 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