Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Overcast

47°F

8°C

Humidity 63%
Wind Speed SW 3 mph
Barometer 30.03 in (1012.4 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 18 Jun 4:53 am MDT
Extended Forecast for

4 Miles W Hill City SD

  • Today

    Today: A 20 percent chance of showers after noon.  Mostly sunny, with a high near 63. Northwest wind 6 to 8 mph, with gusts as high as 22 mph.

    High: 63 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers after midnight.  Partly cloudy, with a low around 45. Light and variable wind. Winds could gust as high as 15 mph.

    Low: 45 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 66. Light and variable wind becoming east around 5 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 66 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46. East wind 3 to 5 mph. Winds could gust as high as 18 mph.

    Low: 46 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, then showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 63. East wind 3 to 7 mph. Winds could gust as high as 25 mph.  Chance of precipitation is 70%.

    High: 63 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm.  Low around 48. East wind around 6 mph becoming calm  in the evening. Winds could gust as high as 23 mph.  Chance of precipitation is 100%.

    Low: 48 °F

    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm.  High near 56. Chance of precipitation is 90%.

    High: 56 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers.  Mostly cloudy, with a low around 43.

    Low: 43 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: A chance of showers, then showers and possibly a thunderstorm after noon.  Partly sunny, with a high near 59.

    High: 59 °F

    Showers

Detailed Forecast

Today
A 20 percent chance of showers after noon. Mostly sunny, with a high near 63. Northwest wind 6 to 8 mph, with gusts as high as 22 mph.
Tonight
A 20 percent chance of showers after midnight. Partly cloudy, with a low around 45. Light and variable wind. Winds could gust as high as 15 mph.
Juneteenth
Mostly sunny, with a high near 66. Light and variable wind becoming east around 5 mph in the afternoon. Winds could gust as high as 18 mph.
Friday Night
Partly cloudy, with a low around 46. East wind 3 to 5 mph. Winds could gust as high as 18 mph.
Saturday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 63. East wind 3 to 7 mph. Winds could gust as high as 25 mph. Chance of precipitation is 70%.
Saturday Night
Showers and possibly a thunderstorm. Low around 48. East wind around 6 mph becoming calm in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 100%.
Sunday
Showers and possibly a thunderstorm. High near 56. Chance of precipitation is 90%.
Sunday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 43.
Monday
A chance of showers, then showers and possibly a thunderstorm after noon. Partly sunny, with a high near 59.
Monday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 41.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 64.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 44.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Hill City SD
 43.95°N 103.65°W (Elev. 6201 ft)
4:57 am MDT Jun 18, 2026
5am MDT Jun 18, 2026-6pm MDT Jun 24, 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