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

Custer, Custer County Airport (KCUT)

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

Fair

60°F

16°C

Humidity 90%
Wind Speed E 6 mph
Barometer 30.01 in (1008.7 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 7 Sep 2:53 am MDT
Extended Forecast for

6 Miles NNW Keystone SD

  • Overnight

    Overnight: A 50 percent chance of showers and thunderstorms, mainly before 4am. Mostly cloudy, with a steady temperature around 70. Southwest wind around 6 mph, with gusts as high as 21 mph.

    Low: 70 °F

    Chance
    T-storms

  • Labor Day

    Labor Day: Cloudy through mid morning, then gradual clearing, with a high near 87. West wind 6 to 14 mph, with gusts as high as 29 mph.

    High: 87 °F

    Gradual
    Clearing

  • Monday Night

    Monday Night: Mostly clear, with a low around 52. Southwest wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 24 mph.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. Calm wind becoming southwest around 6 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 49. Light northwest wind. Winds could gust as high as 18 mph.

    Low: 49 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 76. Calm wind becoming northwest around 5 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 76 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 52.

    Low: 52 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

Detailed Forecast

Overnight
A 50 percent chance of showers and thunderstorms, mainly before 4am. Mostly cloudy, with a steady temperature around 70. Southwest wind around 6 mph, with gusts as high as 21 mph.
Labor Day
Cloudy through mid morning, then gradual clearing, with a high near 87. West wind 6 to 14 mph, with gusts as high as 29 mph.
Monday Night
Mostly clear, with a low around 52. Southwest wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 24 mph.
Tuesday
Sunny, with a high near 80. Calm wind becoming southwest around 6 mph in the afternoon. Winds could gust as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 49. Light northwest wind. Winds could gust as high as 18 mph.
Wednesday
Sunny, with a high near 76. Calm wind becoming northwest around 5 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Clear, with a low around 52.
Thursday
Sunny, with a high near 86.
Thursday Night
Mostly clear, with a low around 55.
Friday
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 48.
Saturday
Sunny, with a high near 73.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 44.
Sunday
A chance of showers. Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNW Keystone SD
 43.98°N 103.47°W (Elev. 4800 ft)
Last Update:
1:16 am MDT Sep 7, 2026
Forecast Valid:
3am MDT Sep 7, 2026-6pm MDT Sep 13, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation