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

Lake Effect Snow through Saturday: A Series of Storms Impact the West

Lake effect snow showers will continue through Saturday downwind of Lakes Erie, Ontario and the eastern portion of Lake Superior. A series of storm systems will continue to impact California and the Pacific Northwest through the weekend and into next week, bringing widespread rainfall, mountain snowfall, and gusty winds. Coastal flooding is expected in northern California. Read More >

Hazardous Weather Conditions

Current conditions at

Nevada County Air Park (KGOO)

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

Overcast

48°F

9°C

Humidity 87%
Wind Speed SSE 8 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 02 Jan 02:55 PM PST
Extended Forecast for

Grass Valley CA

Flood Watch January 2, 10:00pm until January 5, 04:00pm
Click here for hazard details and duration
Flood Watch

  • Tonight

    Tonight: Rain, mainly after 7pm. The rain could be heavy at times. Steady temperature around 48. South wind 10 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    Low: 48 °F

    Heavy Rain

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 50. South wind around 14 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    High: 50 °F

    Showers

  • Saturday Night

    Saturday Night: Rain. The rain could be heavy at times. Steady temperature around 46. South wind around 14 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    Low: 46 °F

    Heavy Rain

  • Sunday

    Sunday: Rain. The rain could be heavy at times. High near 46. South wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 46 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: Rain. Low around 40. South wind around 6 mph. Chance of precipitation is 90%.

    Low: 40 °F

    Rain

  • Monday

    Monday: Rain before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then rain likely and possibly a thunderstorm after 4pm. High near 47. Chance of precipitation is 90%.

    High: 47 °F

    Showers

  • Monday Night

    Monday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 38. Chance of precipitation is 70%.

    Low: 38 °F

    Rain Likely

  • Tuesday

    Tuesday: A slight chance of rain before 10am. Partly sunny, with a high near 51.

    High: 51 °F

    Slight Chance
    Rain then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain after 10pm. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance Rain

Detailed Forecast

Tonight
Rain, mainly after 7pm. The rain could be heavy at times. Steady temperature around 48. South wind 10 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Saturday
Showers and possibly a thunderstorm. High near 50. South wind around 14 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Saturday Night
Rain. The rain could be heavy at times. Steady temperature around 46. South wind around 14 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Sunday
Rain. The rain could be heavy at times. High near 46. South wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Sunday Night
Rain. Low around 40. South wind around 6 mph. Chance of precipitation is 90%.
Monday
Rain before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then rain likely and possibly a thunderstorm after 4pm. High near 47. Chance of precipitation is 90%.
Monday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 38. Chance of precipitation is 70%.
Tuesday
A slight chance of rain before 10am. Partly sunny, with a high near 51.
Tuesday Night
A chance of rain after 10pm. Mostly cloudy, with a low around 39.
Wednesday
A chance of rain. Mostly cloudy, with a high near 47.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 32.
Thursday
A slight chance of rain and snow. Mostly sunny, with a high near 48.
Thursday Night
Mostly clear, with a low around 31.
Friday
Sunny, with a high near 50.
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 pm PST Jan 2, 2026
Forecast Valid:
3pm PST Jan 2, 2026-6pm PST Jan 9, 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