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

Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

Nevada County Air Park (KGOO)

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

Clear

84°F

29°C

Humidity 20%
Wind Speed N 0 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 31 Jul 07:55 PM PDT
Extended Forecast for

Grass Valley CA

  • Tonight

    Tonight: Clear, with a low around 63. Light and variable wind.

    Low: 63 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 94. Calm wind becoming west around 5 mph in the afternoon.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 64. Light and variable wind.

    Low: 64 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 95. Light and variable wind becoming west southwest around 5 mph in the afternoon.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 64. West southwest wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 64.

    Low: 64 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 64.

    Low: 64 °F

    Clear

Detailed Forecast

Tonight
Clear, with a low around 63. Light and variable wind.
Saturday
Sunny, with a high near 94. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
Clear, with a low around 64. Light and variable wind.
Sunday
Sunny, with a high near 95. Light and variable wind becoming west southwest around 5 mph in the afternoon.
Sunday Night
Clear, with a low around 64. West southwest wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 95.
Monday Night
Clear, with a low around 64.
Tuesday
Sunny, with a high near 94.
Tuesday Night
Clear, with a low around 64.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Clear, with a low around 64.
Thursday
Sunny, with a high near 93.
Thursday Night
Clear, with a low around 65.
Friday
Sunny, with a high near 93.
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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 Jul 31, 2026
Forecast Valid:
8pm PDT Jul 31, 2026-6pm PDT Aug 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation