National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall and Significant Flooding in the Upper Midwest This Weekend

Heavy to excessive rainfall is expected over the weekend across eastern Iowa, northern Missouri, northwest Illinois and southern Wisconsin. Numerous flash floods, some with significant impacts, are expected in these areas. Heaviest rainfall will occur overnight Saturday and Sunday, so be sure to have multiple ways to receive warnings. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

72°F

22°C

Humidity 30%
Wind Speed W 13 G 20 mph
Barometer 30.05 in (1011.1 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 8 Aug 5:53 pm MDT
Extended Forecast for

Hot Springs SD

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy during the early evening, then gradual clearing, with a low around 56. East wind around 5 mph becoming calm after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 20%.

    Low: 56 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 84. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 58. Northwest wind 5 to 10 mph becoming north in the evening. Winds could gust as high as 15 mph.

    Low: 58 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 82. Northwest wind 5 to 10 mph becoming southeast in the morning. Winds could gust as high as 15 mph.

    High: 82 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59. East wind around 5 mph becoming calm in the evening. Winds could gust as high as 15 mph.

    Low: 59 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 89. West wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. North wind 5 to 10 mph becoming southeast in the morning. Winds could gust as high as 20 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy during the early evening, then gradual clearing, with a low around 56. East wind around 5 mph becoming calm after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 84. West wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 58. Northwest wind 5 to 10 mph becoming north in the evening. Winds could gust as high as 15 mph.
Sunday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 82. Northwest wind 5 to 10 mph becoming southeast in the morning. Winds could gust as high as 15 mph.
Sunday Night
Mostly clear, with a low around 59. East wind around 5 mph becoming calm in the evening. Winds could gust as high as 15 mph.
Monday
Sunny, with a high near 89. West wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 60. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday
Sunny, with a high near 93. North wind 5 to 10 mph becoming southeast in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Sunny, with a high near 94.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Sunny, with a high near 98.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Friday
Sunny, with a high near 95.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hot Springs SD
 43.44°N 103.48°W (Elev. 3599 ft)
Last Update:
4:30 pm MDT Aug 8, 2025
Forecast Valid:
6pm MDT Aug 8, 2025-6pm MDT Aug 15, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation