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

59°F

15°C

Humidity 33%
Wind Speed N 0 MPH
Barometer 30.2 in (1022.69 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 10 Dec 02:35 AM PST
Extended Forecast for

Grass Valley CA

  • Today

    Today: Widespread haze between 8am and 11am. Sunny, with a high near 66. Calm wind.

    High: 66 °F

    Haze then
    Sunny

  • Tonight

    Tonight: Clear, with a low around 46. Calm wind.

    Low: 46 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 67. Calm wind.

    High: 67 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 44. Light east northeast wind.

    Low: 44 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 65. Light and variable wind.

    High: 65 °F

    Sunny

  • Friday Night

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

    Low: 44 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Saturday Night

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

    Low: 42 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

Detailed Forecast

Today
Widespread haze between 8am and 11am. Sunny, with a high near 66. Calm wind.
Tonight
Clear, with a low around 46. Calm wind.
Thursday
Sunny, with a high near 67. Calm wind.
Thursday Night
Clear, with a low around 44. Light east northeast wind.
Friday
Sunny, with a high near 65. Light and variable wind.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Sunny, with a high near 65.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Sunny, with a high near 63.
Sunday Night
Partly cloudy, with a low around 44.
Monday
A chance of showers. Partly sunny, with a high near 60.
Monday Night
A chance of showers. Mostly cloudy, with a low around 47.
Tuesday
A chance of showers. Partly sunny, with a high near 58.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Grass Valley CA
 39.23°N 121.05°W (Elev. 2657 ft)
1:21 am PST Dec 10, 2025
4am PST Dec 10, 2025-6pm PST Dec 16, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database