Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Nevada County Air Park (KGOO)

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

Clear

55°F

13°C

Humidity 28%
Wind Speed N 0 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 21 Jan 02:15 AM PST
Extended Forecast for

Grass Valley CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 63. Calm wind.

    High: 63 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Cloudy, with a low around 47. Calm wind.

    Low: 47 °F

    Cloudy

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 61. Calm wind.

    High: 61 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 38.

    Low: 38 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 46. Calm wind.
Wednesday
Mostly cloudy, with a high near 63. Calm wind.
Wednesday Night
Cloudy, with a low around 47. Calm wind.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 61. Calm wind.
Thursday Night
Mostly clear, with a low around 40. Calm wind.
Friday
Sunny, with a high near 58.
Friday Night
Clear, with a low around 38.
Saturday
Sunny, with a high near 59.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Mostly sunny, with a high near 56.
Sunday Night
Mostly cloudy, with a low around 38.
Monday
Mostly sunny, with a high near 59.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Partly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
Grass Valley CA
 39.23°N 121.05°W (Elev. 2657 ft)
1:21 am PST Jan 21, 2026
2am PST Jan 21, 2026-6pm PST Jan 27, 2026
 
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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