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

High-Impact and Far-Reaching Winter Storm Continues; Cold Expands and Persists

A major winter storm will shift its impacts into the Northeast U.S. with heavy snow through tonight while over the Mid-Atlantic, sleet and freezing rain will diminish. Extremely cold air behind the storm will prolong dangerous travel and infrastructure impacts. Sub-zero low temperatures are expected nearly every morning from the Northern Plains through the Ohio Valley and into the Northeast. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

-6°F

-21°C

Humidity 75%
Wind Speed W 10 mph
Barometer 29.98 in (1027.7 mb)
Dewpoint -12°F (-24°C)
Visibility 10.00 mi
Wind Chill-23°F (-31°C)
Last update 25 Jan 9:53 pm MST
Extended Forecast for

3 Miles NNE Keystone SD

  • Tonight

    Tonight: Mostly clear, with a temperature rising to around 10 by 5am. Wind chill values as low as -19. West wind 6 to 8 mph, with gusts as high as 21 mph.

    Low: -6 °F⇑

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 38. Wind chill values as low as 2. Northwest wind 8 to 13 mph, with gusts as high as 34 mph.

    High: 38 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 15. West wind around 6 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: 15 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 34. Wind chill values as low as 16. Calm wind becoming northwest around 6 mph. Winds could gust as high as 17 mph.

    High: 34 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a steady temperature around 26. West wind 3 to 6 mph. Winds could gust as high as 18 mph.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 40. West wind around 6 mph becoming light and variable in the afternoon. Winds could gust as high as 17 mph.

    High: 40 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 22. Light and variable wind.

    Low: 22 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of snow after 11am. Partly sunny, with a high near 35. North wind 3 to 6 mph. Winds could gust as high as 20 mph.

    High: 35 °F

    Slight Chance
    Snow

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 15.

    Low: 15 °F

    Chance Snow

Detailed Forecast

Tonight
Mostly clear, with a temperature rising to around 10 by 5am. Wind chill values as low as -19. West wind 6 to 8 mph, with gusts as high as 21 mph.
Monday
Sunny, with a high near 38. Wind chill values as low as 2. Northwest wind 8 to 13 mph, with gusts as high as 34 mph.
Monday Night
Partly cloudy, with a low around 15. West wind around 6 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Tuesday
Partly sunny, with a high near 34. Wind chill values as low as 16. Calm wind becoming northwest around 6 mph. Winds could gust as high as 17 mph.
Tuesday Night
Mostly clear, with a steady temperature around 26. West wind 3 to 6 mph. Winds could gust as high as 18 mph.
Wednesday
Mostly sunny, with a high near 40. West wind around 6 mph becoming light and variable in the afternoon. Winds could gust as high as 17 mph.
Wednesday Night
Mostly cloudy, with a low around 22. Light and variable wind.
Thursday
A slight chance of snow after 11am. Partly sunny, with a high near 35. North wind 3 to 6 mph. Winds could gust as high as 20 mph.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 15.
Friday
A slight chance of snow. Partly sunny, with a high near 35.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
A slight chance of rain. Partly sunny, with a high near 48.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Mostly sunny, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Keystone SD
 43.92°N 103.41°W (Elev. 4708 ft)
Last Update:
9:21 pm MST Jan 25, 2026
Forecast Valid:
10pm MST Jan 25, 2026-6pm MST Feb 1, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation