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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Nevada County Air Park (KGOO)

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

Clear

77°F

25°C

Humidity 41%
Wind Speed N 0 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 28 Aug 03:30 PM PDT
Extended Forecast for

Grass Valley CA

  • This Afternoon

    This Afternoon: A 20 percent chance of rain. Partly sunny, with a steady temperature around 78. South wind around 5 mph.

    High: 78 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: Mostly clear, with a low around 61. Light and variable wind.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 83. Light and variable wind becoming south 5 to 7 mph in the morning.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 56. South southwest wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 58.

    Low: 58 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of rain. Partly sunny, with a steady temperature around 78. South wind around 5 mph.
Tonight
Mostly clear, with a low around 61. Light and variable wind.
Saturday
Sunny, with a high near 83. Light and variable wind becoming south 5 to 7 mph in the morning.
Saturday Night
Clear, with a low around 56. South southwest wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
Clear, with a low around 58.
Monday
Sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 53.
Thursday
Sunny, with a high near 76.
Thursday Night
A slight chance of rain. Partly cloudy, with a low around 53.
Friday
A slight chance of rain. Sunny, with a high near 79.
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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 pm PDT Aug 28, 2026
Forecast Valid:
3pm PDT Aug 28, 2026-6pm PDT Sep 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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