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 >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

Lat: 43.73°NLon: 103.62°WElev: 5600ft.

Fair

75°F

24°C

Humidity 31%
Wind Speed Vrbl 7 G 21 mph
Barometer 30.11 in (1013.5 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 29 Sep 2:53 pm MDT
Extended Forecast for

4 Miles SSW Hill City SD

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms before 4pm.  Mostly sunny, with a high near 75. South wind 6 to 8 mph, with gusts as high as 18 mph.

    High: 75 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 52. South wind around 6 mph, with gusts as high as 17 mph.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75. Southwest wind 5 to 9 mph, with gusts as high as 24 mph.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 52. South wind 6 to 8 mph, with gusts as high as 22 mph.

    Low: 52 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 73. West wind 3 to 8 mph. Winds could gust as high as 22 mph.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 51. Calm wind becoming west around 6 mph after midnight.

    Low: 51 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 76. Southwest wind 5 to 7 mph, with gusts as high as 21 mph.

    High: 76 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 51. Calm wind becoming west around 6 mph after midnight. Winds could gust as high as 15 mph.

    Low: 51 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of showers after noon.  Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms before 4pm. Mostly sunny, with a high near 75. South wind 6 to 8 mph, with gusts as high as 18 mph.
Tonight
Mostly clear, with a low around 52. South wind around 6 mph, with gusts as high as 17 mph.
Tuesday
Sunny, with a high near 75. Southwest wind 5 to 9 mph, with gusts as high as 24 mph.
Tuesday Night
Partly cloudy, with a low around 52. South wind 6 to 8 mph, with gusts as high as 22 mph.
Wednesday
Sunny, with a high near 73. West wind 3 to 8 mph. Winds could gust as high as 22 mph.
Wednesday Night
Mostly clear, with a low around 51. Calm wind becoming west around 6 mph after midnight.
Thursday
Sunny, with a high near 76. Southwest wind 5 to 7 mph, with gusts as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 51. Calm wind becoming west around 6 mph after midnight. Winds could gust as high as 15 mph.
Friday
A slight chance of showers after noon. Mostly sunny, with a high near 69.
Friday Night
A chance of showers. Mostly cloudy, with a low around 42.
Saturday
A slight chance of showers. Mostly sunny, with a high near 62.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 40.
Sunday
A chance of showers. Partly sunny, with a high near 55.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 35.
Monday
A chance of showers. Mostly cloudy, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Hill City SD
 43.87°N 103.58°W (Elev. 5650 ft)
1:56 pm MDT Sep 29, 2025
3pm MDT Sep 29, 2025-6pm MDT Oct 6, 2025
 
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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