Heavy Snow in the Cascades and Northern Rockies; Wintry Mix in the Northeast; High Winds in Southern California

Two more cold fronts will pass through the Northwest U.S. this week with heavy mountain snow continuing across the Cascades, and northern Rockies. A quick moving storm system will bring mixed precipitation including some freezing rain across the Northeast U.S. today. High winds could blow down trees and power lines in the mountains of southern California this evening through Thursday. Read More >

Current conditions at

Nevada County Air Park (KGOO)

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

Overcast

41°F

5°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 41°F (5°C)
Visibility 9.00 mi
Last update 07 Jan 08:15 AM PST
Extended Forecast for

Grass Valley CA

  • Today

    Today: A chance of rain before 4pm, then a chance of rain after 5pm.  Areas of fog before noon.  Otherwise, partly sunny, with a high near 49. Calm wind becoming southwest around 5 mph in the afternoon.  Chance of precipitation is 30%.

    High: 49 °F

    Areas Fog
    then Chance
    Rain

  • Tonight

    Tonight: Rain likely, mainly before 10pm.  Patchy fog after 9pm. Widespread frost, mainly after 5am.  Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 30. Light and variable wind.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 30 °F

    Rain Likely
    and Patchy
    Fog

  • Thursday

    Thursday: Areas of fog before 9am. Widespread frost, mainly before 9am.  Otherwise, sunny, with a high near 46. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 46 °F

    Frost and
    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30. Northeast wind around 6 mph.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 51. East northeast wind around 5 mph becoming calm  in the morning.

    High: 51 °F

    Sunny

  • Friday Night

    Friday Night: Areas of frost between 11pm and 3am.  Otherwise, mostly clear, with a low around 33.

    Low: 33 °F

    Areas Frost

  • Saturday

    Saturday: Areas of frost before 8am.  Otherwise, mostly sunny, with a high near 55.

    High: 55 °F

    Areas Frost
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

Detailed Forecast

Today
A chance of rain before 4pm, then a chance of rain after 5pm. Areas of fog before noon. Otherwise, partly sunny, with a high near 49. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 30%.
Tonight
Rain likely, mainly before 10pm. Patchy fog after 9pm. Widespread frost, mainly after 5am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 30. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Areas of fog before 9am. Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 46. Calm wind becoming north northwest around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 30. Northeast wind around 6 mph.
Friday
Sunny, with a high near 51. East northeast wind around 5 mph becoming calm in the morning.
Friday Night
Areas of frost between 11pm and 3am. Otherwise, mostly clear, with a low around 33.
Saturday
Areas of frost before 8am. Otherwise, mostly sunny, with a high near 55.
Saturday Night
Mostly cloudy, with a low around 37.
Sunday
Partly sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 38.
Monday
Sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Sunny, with a high near 62.
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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 7, 2026
8am PST Jan 7, 2026-6pm PST Jan 13, 2026
 
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