Severe Thunderstorms and Heavy Rain in the Mid-Atlantic; Heat Persists Across the South

Scattered severe thunderstorms and excessive rainfall are possible into the night in the Mid Atlantic, and heavy rain will shift to Virginia and the Carolinas on Friday. Severe thunderstorms are also possible in the Central Plains into the Upper MS Valley and the Deep South tonight. Dangerous heat persists across the Southern Plains and Lower MS Valley and heat will expand into the Southwest. 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 17%
Wind Speed N 0 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 20 Aug 06:35 PM PDT
Extended Forecast for

Grass Valley CA

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 64. Calm wind.

    Low: 64 °F

    Decreasing
    Clouds

  • Friday

    Friday: Partly sunny, with a high near 88. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 88 °F

    Partly Sunny

  • Friday Night

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

    Low: 61 °F

    Mostly Clear

  • Saturday

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

    High: 86 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 60. Southwest wind around 5 mph becoming calm  in the evening.

    Low: 60 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 64. Calm wind.
Friday
Partly sunny, with a high near 88. Calm wind becoming south southwest around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 61. Light and variable wind.
Saturday
Sunny, with a high near 86. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 60. Southwest wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 63.
Monday
Mostly sunny, with a high near 86.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Partly cloudy, with a low around 60.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Grass Valley CA
 39.23°N 121.08°W (Elev. 2598 ft)
2:00 pm PDT Aug 20, 2026
6pm PDT Aug 20, 2026-6pm PDT Aug 27, 2026
 
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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