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

Risks of Severe Thunderstorms and Excessive Rainfall; Fire Weather Concerns and Record Warmth

Severe thunderstorms and flash flooding risks increase across the center of the nation today. Meanwhile, ongoing thunderstorms and flash flooding will linger along the Gulf Coast states through the evening. The Great Basin and Intermountain West, warm temperatures and dry fuels with dry lightning may enhance fire weather potential. In addition, across interior Alaska, Red Flag Warning are posted. Read More >

Current conditions at

Nevada County Air Park (KGOO)

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

Clear

64°F

18°C

Humidity 52%
Wind Speed N 0 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 20 Jun 07:35 AM PDT
Extended Forecast for

Grass Valley CA

  • Today

    Today: Sunny, with a high near 78. Calm wind becoming west around 5 mph in the afternoon.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 55. Light and variable wind.

    Low: 55 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 83. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 59. West southwest wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 86. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 78. Calm wind becoming west around 5 mph in the afternoon.
Tonight
Clear, with a low around 55. Light and variable wind.
Sunday
Sunny, with a high near 83. Calm wind becoming west southwest around 5 mph in the afternoon.
Sunday Night
Clear, with a low around 59. West southwest wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 86. Calm wind becoming west southwest around 5 mph in the afternoon.
Monday Night
Clear, with a low around 61.
Tuesday
Sunny, with a high near 89.
Tuesday Night
Clear, with a low around 61.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Clear, with a low around 62.
Thursday
Sunny, with a high near 88.
Thursday Night
Clear, with a low around 60.
Friday
Sunny, with a high near 85.
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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:
2:00 am PDT Jun 20, 2026
Forecast Valid:
7am PDT Jun 20, 2026-6pm PDT Jun 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