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

Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Hazardous Weather Conditions

Current conditions at

Nevada County Air Park (KGOO)

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

Overcast

39°F

4°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 26 Dec 07:35 AM PST
Extended Forecast for

Grass Valley CA

Flood Watch December 26, 07:46am until December 26, 04:00pm
Wind Advisory until December 26, 10:00am
Flood Advisory December 26, 07:46am until December 26, 06:00pm
Click here for hazard details and duration
Flood Watch
...
Flood Advisory
  •  
    Flood Watch December 26, 07:46am until December 26, 04:00pm
    Wind Advisory until December 26, 10:00am
    Flood Advisory December 26, 07:46am until December 26, 06:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Today

    High: 45 °F

    Rain Likely
    then Rain

  • Tonight

    Tonight: Rain likely, mainly before 11pm. Cloudy, with a low around 37. South southeast wind 5 to 7 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 37 °F

    Rain Likely

  • Saturday

    Saturday: A 40 percent chance of rain, mainly before 10am. Mostly cloudy, then gradually becoming sunny, with a high near 47. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

    High: 47 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 32. East northeast wind 3 to 6 mph.

    Low: 32 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 51. East northeast wind 3 to 5 mph.

    High: 51 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 35.

    Low: 35 °F

    Clear

Detailed Forecast

Today
Rain, mainly after noon. High near 45. South southeast wind 9 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Rain likely, mainly before 11pm. Cloudy, with a low around 37. South southeast wind 5 to 7 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
A 40 percent chance of rain, mainly before 10am. Mostly cloudy, then gradually becoming sunny, with a high near 47. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Increasing clouds, with a low around 32. East northeast wind 3 to 6 mph.
Sunday
Sunny, with a high near 51. East northeast wind 3 to 5 mph.
Sunday Night
Mostly clear, with a low around 34.
Monday
Sunny, with a high near 55.
Monday Night
Clear, with a low around 35.
Tuesday
Sunny, with a high near 57.
Tuesday Night
Mostly clear, with a low around 37.
Wednesday
Sunny, with a high near 57.
Wednesday Night
A slight chance of rain. Mostly cloudy, with a low around 40.
New Year's Day
A chance of rain. Mostly cloudy, with a high near 52.
Basemap Options
Click map to change the forecast location
Loading map...
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 Dec 26, 2025
Forecast Valid:
7am PST Dec 26, 2025-6pm PST Jan 1, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation