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

Extreme Heat Continues; Severe Thunderstorms into Upper Midwest; Strong Bering Sea Storm

Wildfires and poor air quality continue for the Pacific Northwest, Rockies and extended into the Plains. Severe thunderstorms possible for the northern Plains and upper Midwest on Monday along a frontal boundary. Another boundary will focus showers and thunderstorms for the eastern seaboard with localized heavy rainfall possible. For Alaska, a strong Bering Sea storm will bring winds and rainfall. Read More >

Hazardous Weather Conditions

Current conditions at

Nevada County Air Park (KGOO)

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

Partly Cloudy

77°F

25°C

Humidity 31%
Wind Speed N 0 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 03 Aug 01:35 AM PDT
Extended Forecast for

Grass Valley CA

Heat Advisory August 3, 10:00am until August 3, 10:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Clear, with a steady temperature around 77. Light east northeast wind.

    Low: 77 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 97. Calm wind becoming west around 5 mph in the afternoon.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 74. Light and variable wind.

    Low: 74 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 96. Light and variable wind becoming west southwest around 5 mph in the afternoon.

    High: 96 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 66. West southwest wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 65.

    Low: 65 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 66.

    Low: 66 °F

    Clear

Detailed Forecast

Overnight
Clear, with a steady temperature around 77. Light east northeast wind.
Monday
Sunny and hot, with a high near 97. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
Clear, with a low around 74. Light and variable wind.
Tuesday
Sunny and hot, with a high near 96. Light and variable wind becoming west southwest around 5 mph in the afternoon.
Tuesday Night
Clear, with a low around 66. West southwest wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 94.
Wednesday Night
Clear, with a low around 65.
Thursday
Sunny, with a high near 95.
Thursday Night
Clear, with a low around 66.
Friday
Sunny and hot, with a high near 97.
Friday Night
Mostly clear, with a low around 68.
Saturday
Sunny and hot, with a high near 96.
Saturday Night
Clear, with a low around 68.
Sunday
Sunny, with a high near 92.
Basemap Options
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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:
1:31 am PDT Aug 3, 2026
Forecast Valid:
1am PDT Aug 3, 2026-6pm PDT Aug 9, 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