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Deep Cold Trough Meets Gulf Moisture with Significant Impacts Across the Western and Central U.S.

A deep trough and associated cold front is bringing much below normal temperatures in the west, with low elevation snows. Strong winds and widespread snow, will impact the Great Basin, western mountains, and the Plains. The slowing front, will bring prolonged waves of heavy rain across the Mississippi Valley to the Great Lakes. Significant icing forecast north of the heavy rain. Big warm up east. Read More >

7-Day Forecast for Latitude 39.23°N and Longitude 121.05°W (Elev. 2657 ft) (Text-Only)
NWS Forecast for: Grass Valley CA
Issued by: National Weather Service Sacramento, CA
Last Update: 2:41 pm PST Feb 19, 2018
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  • Washington's
    Birthday

    Washington's Birthday: Mostly sunny, with a steady temperature around 37. West northwest wind around 9 mph.

    Mostly Sunny

    High: 37 °F

  • Tonight

    Tonight: Mostly clear, with a low around 21. Light and variable wind becoming east around 5 mph in the evening.

    Mostly Clear

    Low: 21 °F

  • Tuesday

    Tuesday: Sunny, with a high near 42. Light and variable wind becoming south southwest 5 to 7 mph in the afternoon.

    Sunny

    High: 42 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 21. Light and variable wind becoming east around 5 mph in the evening.

    Partly Cloudy

    Low: 21 °F

  • Wednesday

    Wednesday: A 20 percent chance of snow showers before 4pm.  Mostly sunny, with a high near 45. East northeast wind around 6 mph becoming south southeast in the morning.

    Slight Chance
    Snow Showers

    High: 45 °F

  • Wednesday
    Night

    Wednesday Night: A 30 percent chance of snow showers after 10pm.  Partly cloudy, with a low around 30. New snow accumulation of less than one inch possible.

    Chance Snow
    Showers

    Low: 30 °F

  • Thursday

    Thursday: A 50 percent chance of snow showers.  Partly sunny, with a high near 41. New snow accumulation of 1 to 3 inches possible.

    Chance Snow
    Showers

    High: 41 °F

  • Thursday
    Night

    Thursday Night: A chance of snow showers.  Mostly cloudy, with a low around 25.

    Chance Snow
    Showers

    Low: 25 °F

  • Friday

    Friday: A slight chance of snow showers.  Mostly sunny, with a high near 48.

    Slight Chance
    Snow Showers

    High: 48 °F



  • Washington's Birthday: Mostly sunny, with a steady temperature around 37. West northwest wind around 9 mph.

    Tonight: Mostly clear, with a low around 21. Light and variable wind becoming east around 5 mph in the evening.

    Tuesday: Sunny, with a high near 42. Light and variable wind becoming south southwest 5 to 7 mph in the afternoon.

    Tuesday Night: Partly cloudy, with a low around 21. Light and variable wind becoming east around 5 mph in the evening.

    Wednesday: A 20 percent chance of snow showers before 4pm. Mostly sunny, with a high near 45. East northeast wind around 6 mph becoming south southeast in the morning.

    Wednesday Night: A 30 percent chance of snow showers after 10pm. Partly cloudy, with a low around 30. New snow accumulation of less than one inch possible.

    Thursday: A 50 percent chance of snow showers. Partly sunny, with a high near 41. New snow accumulation of 1 to 3 inches possible.

    Thursday Night: A chance of snow showers. Mostly cloudy, with a low around 25.

    Friday: A slight chance of snow showers. Mostly sunny, with a high near 48.

    Friday Night: Partly cloudy, with a low around 28.

    Saturday: Partly sunny, with a high near 49.

    Saturday Night: A slight chance of showers. Mostly cloudy, with a low around 31.

    Sunday: A slight chance of rain and snow showers. Partly sunny, with a high near 49.

    Sunday Night: A slight chance of rain and snow showers. Mostly cloudy, with a low around 34.

    Monday: A chance of rain and snow showers. Partly sunny, with a high near 48.



    Grass Valley CA
     39.23°N 121.05°W (Elev. 2657 ft)

    Visit your local NWS office at: http://www.wrh.noaa.gov/sto