Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Nevada County Air Park (KGOO)

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

Clear

86°F

30°C

Humidity 22%
Wind Speed N 0 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 19 Aug 11:30 AM PDT
Extended Forecast for

Grass Valley CA

  • Today

    Today: Sunny, with a high near 92. West southwest wind 3 to 5 mph.

    High: 92 °F

    Sunny

  • Tonight

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

    Low: 64 °F

    Clear

  • Thursday

    Thursday: Sunny through mid morning, then becoming partly sunny, with a high near 91. Light and variable wind becoming southwest around 5 mph in the afternoon.

    High: 91 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 89. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 89 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 92. West southwest wind 3 to 5 mph.
Tonight
Clear, with a low around 64. Light and variable wind.
Thursday
Sunny through mid morning, then becoming partly sunny, with a high near 91. Light and variable wind becoming southwest around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 64. Calm wind.
Friday
Sunny, with a high near 89. Calm wind becoming southwest around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 62.
Saturday
Sunny, with a high near 86.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 62.
Monday
Mostly sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Grass Valley CA
 39.23°N 121.08°W (Elev. 2598 ft)
11:31 am PDT Aug 19, 2026
11am PDT Aug 19, 2026-6pm PDT Aug 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database