National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Atmospheric River Continues Areas of Heavy Rain and Snow for California This Weekend

An atmospheric river will continue to bring gusty winds, moderate to heavy rainfall, and potential flooding to southern California and the southern Great Basin through Sunday. Periods of heavy snow will continue as well above 7,000 feet over the Sierra Nevada mountains associated with this atmospheric river. Read More >

Current conditions at

Nevada County Air Park (KGOO)

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

Clear

66°F

19°C

Humidity 45%
Wind Speed N 0 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 15 Nov 09:35 AM PST
Extended Forecast for

Grass Valley CA

  • Today

    Today: Partly sunny, with a high near 68. Calm wind.

    High: 68 °F

    Partly Sunny

  • Tonight

    Tonight: Showers, mainly after 9pm. Low around 45. South southeast wind 3 to 6 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 45 °F

    Showers

  • Sunday

    Sunday: Showers. High near 49. South southeast wind around 6 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 49 °F

    Showers

  • Sunday Night

    Sunday Night: Showers. Low around 43. South southeast wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 43 °F

    Showers

  • Monday

    Monday: Showers, mainly before 4pm. High near 51. Light south wind. Chance of precipitation is 80%.

    High: 51 °F

    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers, mainly before 10pm. Partly cloudy, with a low around 38.

    Low: 38 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 68. Calm wind.
Tonight
Showers, mainly after 9pm. Low around 45. South southeast wind 3 to 6 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Sunday
Showers. High near 49. South southeast wind around 6 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Sunday Night
Showers. Low around 43. South southeast wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Monday
Showers, mainly before 4pm. High near 51. Light south wind. Chance of precipitation is 80%.
Monday Night
A 30 percent chance of showers, mainly before 10pm. Partly cloudy, with a low around 38.
Tuesday
Mostly sunny, with a high near 54.
Tuesday Night
Mostly clear, with a low around 38.
Wednesday
Mostly sunny, with a high near 54.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 41.
Thursday
Showers likely. Mostly cloudy, with a high near 48.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 39.
Friday
A chance of showers. Mostly sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grass Valley CA
 39.23°N 121.05°W (Elev. 2657 ft)
Last Update:
1:21 am PST Nov 15, 2025
Forecast Valid:
10am PST Nov 15, 2025-6pm PST Nov 21, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation