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 >

Current conditions at

Nevada County Air Park (KGOO)

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

Overcast

48°F

9°C

Humidity 93%
Wind Speed SSE 5 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 46°F (8°C)
Visibility 8.00 mi
Wind Chill46°F (8°C)
Last update 01 Jan 06:55 PM PST
Extended Forecast for

Grass Valley CA

  • Tonight

    Tonight: Rain likely, mainly before 2am. Mostly cloudy, with a low around 43. South southeast wind around 6 mph becoming calm after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Rain Likely

  • Friday

    Friday: A 30 percent chance of rain after 4pm. Partly sunny, with a high near 53. South southeast wind 3 to 6 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 53 °F

    Partly Sunny
    then Chance
    Rain

  • Friday Night

    Friday Night: Rain, mainly after 10pm. Low around 45. Southeast wind 9 to 13 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    Low: 45 °F

    Rain

  • Saturday

    Saturday: Rain before 1pm, then showers and possibly a thunderstorm after 1pm. High near 50. South wind around 13 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    High: 50 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 10pm, then rain after 10pm. Low around 44. South wind 11 to 13 mph, with gusts as high as 29 mph. Chance of precipitation is 100%.

    Low: 44 °F

    Showers

  • Sunday

    Sunday: Rain before 10am, then showers and possibly a thunderstorm after 10am. High near 47. Chance of precipitation is 100%.

    High: 47 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 10pm, then rain after 10pm. Low around 41. Chance of precipitation is 100%.

    Low: 41 °F

    Showers

  • Monday

    Monday: Rain. Cloudy, with a high near 45.

    High: 45 °F

    Rain

  • Monday Night

    Monday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Rain Likely

Detailed Forecast

Tonight
Rain likely, mainly before 2am. Mostly cloudy, with a low around 43. South southeast wind around 6 mph becoming calm after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
A 30 percent chance of rain after 4pm. Partly sunny, with a high near 53. South southeast wind 3 to 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain, mainly after 10pm. Low around 45. Southeast wind 9 to 13 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Saturday
Rain before 1pm, then showers and possibly a thunderstorm after 1pm. High near 50. South wind around 13 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Saturday Night
Showers and possibly a thunderstorm before 10pm, then rain after 10pm. Low around 44. South wind 11 to 13 mph, with gusts as high as 29 mph. Chance of precipitation is 100%.
Sunday
Rain before 10am, then showers and possibly a thunderstorm after 10am. High near 47. Chance of precipitation is 100%.
Sunday Night
Showers and possibly a thunderstorm before 10pm, then rain after 10pm. Low around 41. Chance of precipitation is 100%.
Monday
Rain. Cloudy, with a high near 45.
Monday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 36.
Tuesday
A slight chance of rain before 10am. Partly sunny, with a high near 50.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 35.
Wednesday
A chance of rain. Partly sunny, with a high near 48.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 34.
Thursday
A chance of rain and snow. Partly sunny, with a high near 45.
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ABOUT THIS FORECAST

 
Point Forecast:
Grass Valley CA
 39.23°N 121.08°W (Elev. 2598 ft)
Last Update:
1:21 pm PST Jan 1, 2026
Forecast Valid:
7pm PST Jan 1, 2026-6pm PST Jan 8, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation