Tracking Atmospheric River for the West Coast; Space Weather Storming Continues

An atmospheric river will bring threats of gusty to high winds and heavy rainfall to California mainly Thursday into Saturday which may bring areas of flooding and wind damage. Heavy snow will be possible over the Sierra Nevada mountains Thursday into Friday associated with the atmospheric river. Minor to severe geomagnetic storming (space weather) is expected to continue into early Thursday. Read More >

Current conditions at

Nevada County Air Park (KGOO)

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

Overcast

57°F

14°C

Humidity 62%
Wind Speed SE 5 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 12 Nov 09:15 PM PST
Extended Forecast for

3 Miles ENE Grass Valley CA

  • Tonight

    Tonight: A 30 percent chance of showers after 4am.  Increasing clouds, with a steady temperature around 55. South southeast wind 6 to 10 mph, with gusts as high as 23 mph.  New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers. The rain could be heavy at times.  High near 55. South wind 7 to 11 mph, with gusts as high as 26 mph.  Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    High: 55 °F

    Heavy Rain

  • Thursday Night

    Thursday Night: Showers. The rain could be heavy at times.  Low around 47. South wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.

    Low: 47 °F

    Heavy Rain

  • Friday

    Friday: A 50 percent chance of showers.  Partly sunny, with a high near 55. Calm wind.  New precipitation amounts between a tenth and quarter of an inch possible.

    High: 55 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48. Light east northeast wind.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: A 10 percent chance of showers after 4pm.  Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly after 10pm.  Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers.  Mostly cloudy, with a high near 49.

    High: 49 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly after 10pm.  Mostly cloudy, with a low around 43.

    Low: 43 °F

    Showers
    Likely

Detailed Forecast

Tonight
A 30 percent chance of showers after 4am. Increasing clouds, with a steady temperature around 55. South southeast wind 6 to 10 mph, with gusts as high as 23 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Showers. The rain could be heavy at times. High near 55. South wind 7 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
Thursday Night
Showers. The rain could be heavy at times. Low around 47. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.
Friday
A 50 percent chance of showers. Partly sunny, with a high near 55. Calm wind. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Partly cloudy, with a low around 48. Light east northeast wind.
Saturday
A 10 percent chance of showers after 4pm. Mostly sunny, with a high near 60.
Saturday Night
A 30 percent chance of showers, mainly after 10pm. Mostly cloudy, with a low around 47.
Sunday
A chance of showers. Mostly cloudy, with a high near 49.
Sunday Night
Showers likely, mainly after 10pm. Mostly cloudy, with a low around 43.
Monday
Showers likely, mainly before 10am. Partly sunny, with a high near 46.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 41.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 48.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 40.
Wednesday
A chance of showers. Partly sunny, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Grass Valley CA
 39.24°N 120.99°W (Elev. 3199 ft)
2:01 pm PST Nov 12, 2025
9pm PST Nov 12, 2025-6pm PST Nov 19, 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