Coastal and Marine Impacts from Imelda and Humberto as Both Track Away from the Southeast U.S.

Swells and high surf from both Imelda and Humberto are expected to bring dangerous marine and rip current conditions to the east coast of Florida and Georgia today, spreading north along much of the east coast of the U.S. this week. Heavy rainfall north and west of Imelda falling across coastal Florida and Georgia into the Carolinas could cause isolated flash and urban flooding through Tuesday. Read More >

Current conditions at

Nevada County Air Park (KGOO)

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

Mist

55°F

13°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 54°F (12°C)
Visibility 4.00 mi
Last update 29 Sep 06:15 AM PDT
Extended Forecast for

4 Miles NE Grass Valley CA

  • Today

    Today: Showers and thunderstorms likely, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm.  Cloudy, with a high near 65. Calm wind becoming south around 5 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before midnight, then a chance of showers.  Mostly cloudy, with a low around 52. Calm wind.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Showers
    Likely then
    Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers before 11am.  Mostly cloudy, with a high near 65. Calm wind becoming south around 5 mph in the afternoon.  New precipitation amounts of less than a tenth of an inch possible.

    High: 65 °F

    Chance
    Showers then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers.  Mostly cloudy, with a low around 52. Light and variable wind.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before 11am.  Mostly cloudy, with a high near 62. Light and variable wind.

    High: 62 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers, mainly before 11pm.  Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

Detailed Forecast

Today
Showers and thunderstorms likely, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. Cloudy, with a high near 65. Calm wind becoming south around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 52. Calm wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A 30 percent chance of showers before 11am. Mostly cloudy, with a high near 65. Calm wind becoming south around 5 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 52. Light and variable wind. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A 30 percent chance of showers, mainly before 11am. Mostly cloudy, with a high near 62. Light and variable wind.
Wednesday Night
A 30 percent chance of showers, mainly before 11pm. Mostly cloudy, with a low around 52.
Thursday
Partly sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 48.
Friday
Sunny, with a high near 74.
Friday Night
Clear, with a low around 51.
Saturday
Sunny, with a high near 76.
Saturday Night
Clear, with a low around 53.
Sunday
Sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Grass Valley CA
 39.26°N 121.02°W (Elev. 2589 ft)
5:21 am PDT Sep 29, 2025
6am PDT Sep 29, 2025-6pm PDT Oct 5, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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