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

64°F

18°C

Humidity 45%
Wind Speed W 3 mph
Barometer 29.98 in (1007.7 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 2 Sep 11:53 pm MDT
Extended Forecast for

5 Miles SE Keystone SD

  • Overnight

    Overnight: Partly cloudy, with a low around 67. Southwest wind 9 to 11 mph, with gusts as high as 25 mph.

    Low: 67 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 87. Southwest wind 7 to 11 mph, with gusts as high as 24 mph.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. Southwest wind 3 to 7 mph. Winds could gust as high as 20 mph.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 91. Southwest wind 6 to 11 mph becoming south in the afternoon. Winds could gust as high as 28 mph.

    High: 91 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 71. South wind 7 to 10 mph becoming west after midnight. Winds could gust as high as 23 mph.

    Low: 71 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 93. West wind 6 to 10 mph becoming south in the afternoon. Winds could gust as high as 22 mph.

    High: 93 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 67. Southwest wind 9 to 11 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 87. Southwest wind 7 to 11 mph, with gusts as high as 24 mph.
Thursday Night
Mostly clear, with a low around 66. Southwest wind 3 to 7 mph. Winds could gust as high as 20 mph.
Friday
Sunny, with a high near 91. Southwest wind 6 to 11 mph becoming south in the afternoon. Winds could gust as high as 28 mph.
Friday Night
Mostly clear, with a low around 71. South wind 7 to 10 mph becoming west after midnight. Winds could gust as high as 23 mph.
Saturday
Sunny, with a high near 93. West wind 6 to 10 mph becoming south in the afternoon. Winds could gust as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Labor Day
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 83.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
A slight chance of showers. Mostly clear, with a low around 59.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SE Keystone SD
 43.83°N 103.37°W (Elev. 4400 ft)
Last Update:
12:06 am MDT Sep 3, 2026
Forecast Valid:
12am MDT Sep 3, 2026-6pm MDT Sep 9, 2026
 
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Additional Resources

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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