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

Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Current conditions at

Nevada County Air Park (KGOO)

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

Clear

57°F

14°C

Humidity 33%
Wind Speed N 6 MPH
Barometer 30.24 in (1024.04 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 30 Dec 11:55 AM PST
Extended Forecast for

Grass Valley CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 60. Calm wind.

    High: 60 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 43. Light east northeast wind.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain, mainly after 4pm. High near 57. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 57 °F

    Chance Rain
    then Rain

  • Wednesday Night

    Wednesday Night: Rain. Low around 46. Calm wind. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 46 °F

    Rain

  • New Year's Day

    New Year's Day: Rain. High near 53. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 100%.

    High: 53 °F

    Rain

  • Thursday Night

    Thursday Night: Rain. Low around 48. Chance of precipitation is 100%.

    Low: 48 °F

    Rain

  • Friday

    Friday: Rain before 10am, then showers and possibly a thunderstorm after 10am. High near 53. Chance of precipitation is 90%.

    High: 53 °F

    Showers

  • Friday Night

    Friday Night: Rain. Cloudy, with a low around 41.

    Low: 41 °F

    Rain

  • Saturday

    Saturday: Rain. Cloudy, with a high near 47.

    High: 47 °F

    Rain

Detailed Forecast

This Afternoon
Sunny, with a high near 60. Calm wind.
Tonight
Mostly cloudy, with a low around 43. Light east northeast wind.
Wednesday
Rain, mainly after 4pm. High near 57. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Rain. Low around 46. Calm wind. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
New Year's Day
Rain. High near 53. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 100%.
Thursday Night
Rain. Low around 48. Chance of precipitation is 100%.
Friday
Rain before 10am, then showers and possibly a thunderstorm after 10am. High near 53. Chance of precipitation is 90%.
Friday Night
Rain. Cloudy, with a low around 41.
Saturday
Rain. Cloudy, with a high near 47.
Saturday Night
Rain. Mostly cloudy, with a low around 39.
Sunday
Rain likely. Mostly cloudy, with a high near 50.
Sunday Night
Rain likely. Mostly cloudy, with a low around 39.
Monday
Rain likely. Mostly cloudy, with a high near 53.
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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 Dec 30, 2025
Forecast Valid:
12pm PST Dec 30, 2025-6pm PST Jan 5, 2026
 
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