Severe Thunderstorms and Heavy Rain Across the Ohio Valley;

Severe thunderstorms with damaging wind gusts will be possible from the mid-Mississippi Valley into parts of the Ohio Valley and central Appalachians. Heavy rain associated with these storms may lead to considerable flash and urban flooding impacts across portions of the Ohio Valley. Mid-summer heat persists from the Central Plains to the Southeast. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

84°F

29°C

Humidity 34%
Wind Speed SE 8 G 20 mph
Barometer 30.08 in (1010.3 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 11 Aug 2:53 pm MDT
Extended Forecast for

6 Miles S Hill City SD

Severe T-storm Watch until August 11, 08:00pm
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch until August 11, 08:00pm

    NOW until 8:00pm Tue

    Severe T-storm Watch

  • This Afternoon

    High: 81 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Partly cloudy, with a low around 56. Northeast wind 5 to 8 mph becoming calm  after midnight. Winds could gust as high as 18 mph.

    Low: 56 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 3pm.  Mostly cloudy, with a high near 73. Calm wind becoming southeast 5 to 9 mph in the morning. Winds could gust as high as 20 mph.  Chance of precipitation is 60%.

    High: 73 °F

    Mostly Cloudy
    then T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 3am, then showers likely.  Low around 51. Northeast wind 5 to 8 mph, with gusts as high as 18 mph.  Chance of precipitation is 80%.

    Low: 51 °F

    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 61. Northeast wind 5 to 9 mph becoming east in the morning. Winds could gust as high as 24 mph.  Chance of precipitation is 70%.

    High: 61 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm.  Low around 51. East wind 7 to 10 mph, with gusts as high as 25 mph.  Chance of precipitation is 80%.

    Low: 51 °F

    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after noon.  Mostly cloudy, with a high near 73. Chance of precipitation is 40%.

    High: 73 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Some of the storms could be severe. Mostly sunny, with a high near 81. South wind 5 to 7 mph becoming north. Winds could gust as high as 20 mph.
Tonight
Partly cloudy, with a low around 56. Northeast wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 18 mph.
Wednesday
Showers and thunderstorms likely, mainly after 3pm. Mostly cloudy, with a high near 73. Calm wind becoming southeast 5 to 9 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Wednesday Night
Showers and possibly a thunderstorm before 3am, then showers likely. Low around 51. Northeast wind 5 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 80%.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 61. Northeast wind 5 to 9 mph becoming east in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 70%.
Thursday Night
Showers and possibly a thunderstorm. Low around 51. East wind 7 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Friday
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 73. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 50.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after noon. Partly sunny, with a high near 67.
Saturday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Partly cloudy, with a low around 48.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 70.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 51.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles S Hill City SD
 43.84°N 103.58°W (Elev. 6171 ft)
1:46 pm MDT Aug 11, 2026
2pm MDT Aug 11, 2026-6pm MDT Aug 17, 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