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

Nevada County Air Park (KGOO)

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

Overcast

54°F

12°C

Humidity 62%
Wind Speed N 0 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 20 Oct 01:35 AM PDT
Extended Forecast for

Grass Valley CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 68. Light and variable wind.

    High: 68 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 50. Light and variable wind.

    Low: 50 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 4pm. Mostly cloudy, with a high near 66. East wind around 5 mph becoming calm in the morning. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 66 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 47. Light south wind. Chance of precipitation is 70%.

    Low: 47 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 60. Chance of precipitation is 70%.

    High: 60 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms before 11pm. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 43.

    Low: 43 °F

    Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 44. Calm wind.
Tuesday
Partly sunny, with a high near 68. Light and variable wind.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 50. Light and variable wind.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly after 4pm. Mostly cloudy, with a high near 66. East wind around 5 mph becoming calm in the morning. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 47. Light south wind. Chance of precipitation is 70%.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 60. Chance of precipitation is 70%.
Thursday Night
A 50 percent chance of showers and thunderstorms before 11pm. Mostly cloudy, with a low around 44.
Friday
Sunny, with a high near 65.
Friday Night
Clear, with a low around 43.
Saturday
Sunny, with a high near 66.
Saturday Night
Partly cloudy, with a low around 45.
Sunday
Mostly sunny, with a high near 65.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grass Valley CA
 39.23°N 121.08°W (Elev. 2598 ft)
Last Update:
11:31 pm PDT Oct 19, 2026
Forecast Valid:
1am PDT Oct 20, 2026-6pm PDT Oct 26, 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