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

Areas of Severe Thunderstorms and Excessive Rainfall; Heat Wave Builds in the Intermountain West and Plains

A slow moving front will bring rounds of strong to severe thunderstorms and heavy rainfall to the central Plains eastward to the east-central U.S.. The first widespread significant heat wave of summer for the Intermountain West and Plains is expected to develop today and expand through next week. Dangerous heat will continue to impact portions of the Southwest and Southeast. Read More >

Current conditions at

Nevada County Air Park (KGOO)

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

haze

88°F

31°C

Humidity 18%
Wind Speed SSW 8 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 39°F (4°C)
Visibility 6.00 mi
Heat Index84°F (29°C)
Last update 10 Jul 02:55 PM PDT
Extended Forecast for

Grass Valley CA

  • Tonight

    Tonight: Clear, with a low around 63. South wind 5 to 7 mph becoming light and variable in the evening.

    Low: 63 °F

    Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 90. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 90 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 67. Light and variable wind.

    Low: 67 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 89. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 89 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 68. Light and variable wind.

    Low: 68 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of rain. Partly sunny, with a high near 88.

    High: 88 °F

    Slight Chance
    Rain

  • Monday Night

    Monday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 66.

    Low: 66 °F

    Clear

Detailed Forecast

Tonight
Clear, with a low around 63. South wind 5 to 7 mph becoming light and variable in the evening.
Saturday
Increasing clouds, with a high near 90. Calm wind becoming south southwest around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 67. Light and variable wind.
Sunday
Partly sunny, with a high near 89. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 68. Light and variable wind.
Monday
A 20 percent chance of rain. Partly sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 66.
Tuesday
Sunny, with a high near 92.
Tuesday Night
Clear, with a low around 66.
Wednesday
Sunny, with a high near 92.
Wednesday Night
Mostly clear, with a low around 65.
Thursday
Sunny, with a high near 90.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 89.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grass Valley CA
 39.23°N 121.08°W (Elev. 2598 ft)
Last Update:
2:00 pm PDT Jul 10, 2026
Forecast Valid:
3pm PDT Jul 10, 2026-6pm PDT Jul 17, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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