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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Overcast

57°F

14°C

Humidity 93%
Wind Speed E 6 mph
Barometer 30.16 in (1017.0 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 19 Sep 6:53 pm MDT
Extended Forecast for

6 Miles SE Hot Springs SD

  • Tonight

    Tonight: Showers and thunderstorms before 2am, then showers and possibly a thunderstorm between 2am and 4am, then showers after 4am. Low around 52. Northeast wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.

    Low: 52 °F

    T-storms

  • Sunday

    Sunday: Showers and possibly a thunderstorm. Patchy fog before 9am. High near 64. Northeast wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.

    High: 64 °F

    Showers and
    Patchy Fog
    then T-storms

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 48. Northeast wind 7 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.

    Low: 48 °F

    T-storms then
    Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers before noon. Mostly cloudy, with a high near 66. Northeast wind 6 to 9 mph, with gusts as high as 22 mph.

    High: 66 °F

    Chance
    Showers then
    Partly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 47. East wind 5 to 11 mph, with gusts as high as 22 mph.

    Low: 47 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 75. Southeast wind 5 to 15 mph, with gusts as high as 28 mph.

    High: 75 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms before 2am, then showers and possibly a thunderstorm between 2am and 4am, then showers after 4am. Low around 52. Northeast wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.
Sunday
Showers and possibly a thunderstorm. Patchy fog before 9am. High near 64. Northeast wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.
Sunday Night
Showers and possibly a thunderstorm. Low around 48. Northeast wind 7 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.
Monday
A 30 percent chance of showers before noon. Mostly cloudy, with a high near 66. Northeast wind 6 to 9 mph, with gusts as high as 22 mph.
Monday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 47. East wind 5 to 11 mph, with gusts as high as 22 mph.
Tuesday
Partly sunny, with a high near 75. Southeast wind 5 to 15 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
A slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 82.
Wednesday Night
Partly cloudy, with a low around 53.
Thursday
Sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 55.
Friday
Mostly sunny, with a high near 84.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 56.
Saturday
Mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SE Hot Springs SD
 43.38°N 103.39°W (Elev. 3182 ft)
Last Update:
6:36 pm MDT Sep 19, 2026
Forecast Valid:
7pm MDT Sep 19, 2026-6pm MDT Sep 26, 2026
 
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