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

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

43°F

6°C

Humidity 40%
Wind Speed W 10 G 20 mph
Barometer 29.63 in (1002.1 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 27 Dec 11:53 am MST
Extended Forecast for

Keystone SD

  • This Afternoon

    This Afternoon: Partly sunny, with a temperature falling to around 39 by 5pm. West wind 7 to 9 mph, with gusts as high as 26 mph.

    High: 50 °F⇓

    Partly Sunny

  • Tonight

    Tonight: A 20 percent chance of snow. Mostly cloudy, with a low around 10. Wind chill values as low as -3. Northwest wind 11 to 16 mph, with gusts as high as 33 mph.

    Low: 10 °F

    Slight Chance
    Snow

  • Sunday

    Sunday: Sunny, with a high near 19. Wind chill values as low as -3. Northwest wind 10 to 14 mph, with gusts as high as 39 mph.

    High: 19 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 3. Northwest wind 5 to 9 mph becoming light after midnight. Winds could gust as high as 28 mph.

    Low: 3 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 38. West wind 3 to 6 mph. Winds could gust as high as 17 mph.

    High: 38 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a temperature falling to near 27 by 8pm, then rising to around 33 during the remainder of the night. West wind around 6 mph, with gusts as high as 18 mph.

    Low: 27 °F⇑

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 48. Northwest wind 5 to 7 mph, with gusts as high as 22 mph.

    High: 48 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 30. West wind around 6 mph, with gusts as high as 18 mph.

    Low: 30 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a temperature falling to around 39 by 5pm. West wind 7 to 9 mph, with gusts as high as 26 mph.
Tonight
A 20 percent chance of snow. Mostly cloudy, with a low around 10. Wind chill values as low as -3. Northwest wind 11 to 16 mph, with gusts as high as 33 mph.
Sunday
Sunny, with a high near 19. Wind chill values as low as -3. Northwest wind 10 to 14 mph, with gusts as high as 39 mph.
Sunday Night
Mostly clear, with a low around 3. Northwest wind 5 to 9 mph becoming light after midnight. Winds could gust as high as 28 mph.
Monday
Sunny, with a high near 38. West wind 3 to 6 mph. Winds could gust as high as 17 mph.
Monday Night
Increasing clouds, with a temperature falling to near 27 by 8pm, then rising to around 33 during the remainder of the night. West wind around 6 mph, with gusts as high as 18 mph.
Tuesday
Partly sunny, with a high near 48. Northwest wind 5 to 7 mph, with gusts as high as 22 mph.
Tuesday Night
Partly cloudy, with a low around 30. West wind around 6 mph, with gusts as high as 18 mph.
Wednesday
Mostly sunny, with a high near 51.
Wednesday Night
Partly cloudy, with a low around 28.
New Year's Day
Mostly sunny, with a high near 47.
Thursday Night
Mostly cloudy, with a low around 28.
Friday
Mostly sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Keystone SD
 43.89°N 103.43°W (Elev. 4541 ft)
Last Update:
11:42 am MST Dec 27, 2025
Forecast Valid:
12pm MST Dec 27, 2025-6pm MST Jan 2, 2026
 
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Additional Resources

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Chance of Precipitation