Thunderstorms and Heavy Rainfall from the Plains to the Mid-Atlantic

Severe thunderstorms producing damaging winds are most likely over parts of the Dakotas into Minnesota from this afternoon into the overnight, with other isolated storms producing hail or wind over the northern High Plains. In the Northern Plains into the Upper Great Lakes and Mid-Atlantic, heavy to excessive rain may bring flash and urban flooding through Wednesday. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

72°F

22°C

Humidity 55%
Wind Speed Vrbl 6 mph
Barometer 30.18 in (1014.5 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 7 Jul 9:53 am MDT
Extended Forecast for

6 Miles SW Hermosa SD

  • Today

    Today: A 30 percent chance of showers and thunderstorms after 3pm. Some of the storms could be severe.  Mostly sunny, with a high near 93. East wind 6 to 9 mph becoming north in the afternoon. Winds could gust as high as 23 mph.

    High: 93 °F

    Mostly Sunny
    then Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before midnight. Some of the storms could be severe.  Mostly cloudy, with a low around 63. North wind 5 to 11 mph becoming southwest after midnight. Winds could gust as high as 24 mph.  Chance of precipitation is 60%.

    Low: 63 °F

    Severe
    Thunderstorms
    then Chance
    T-storms

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms after noon.  Partly sunny, with a high near 82. North wind around 7 mph, with gusts as high as 18 mph.

    High: 82 °F

    Partly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 3am, then a slight chance of showers.  Mostly cloudy, with a low around 59. Northeast wind 5 to 7 mph becoming light and variable  after midnight. Winds could gust as high as 18 mph.  Chance of precipitation is 40%.

    Low: 59 °F

    Chance
    T-storms

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm after noon.  Partly sunny, with a high near 83. Light and variable wind becoming north 5 to 9 mph in the morning. Winds could gust as high as 18 mph.  Chance of precipitation is 70%.

    High: 83 °F

    Partly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 60. North wind 5 to 9 mph becoming light and variable  after midnight. Winds could gust as high as 18 mph.

    Low: 60 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 97.

    High: 97 °F

    Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms after 3pm. Some of the storms could be severe. Mostly sunny, with a high near 93. East wind 6 to 9 mph becoming north in the afternoon. Winds could gust as high as 23 mph.
Tonight
Showers and thunderstorms likely, mainly before midnight. Some of the storms could be severe. Mostly cloudy, with a low around 63. North wind 5 to 11 mph becoming southwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 60%.
Wednesday
A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 82. North wind around 7 mph, with gusts as high as 18 mph.
Wednesday Night
A chance of showers and thunderstorms before 3am, then a slight chance of showers. Mostly cloudy, with a low around 59. Northeast wind 5 to 7 mph becoming light and variable after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 40%.
Thursday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 83. Light and variable wind becoming north 5 to 9 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 70%.
Thursday Night
A 40 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 60. North wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Friday
Sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 64.
Saturday
Sunny, with a high near 97.
Saturday Night
Mostly clear, with a low around 69.
Sunday
Sunny and hot, with a high near 100.
Sunday Night
Mostly clear, with a low around 71.
Monday
Sunny, with a high near 99. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SW Hermosa SD
 43.77°N 103.27°W (Elev. 3852 ft)
8:33 am MDT Jul 7, 2026
10am MDT Jul 7, 2026-6pm MDT Jul 13, 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