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

4°F

-16°C

Humidity 38%
Wind Speed Vrbl 7 mph
Barometer 29.94 in (1024.9 mb)
Dewpoint -16°F (-27°C)
Visibility 10.00 mi
Wind Chill-8°F (-22°C)
Last update 26 Jan 1:53 am MST
Extended Forecast for

3 Miles NNE Keystone SD

  • Overnight

    Overnight: Mostly clear, with a low around -8. West wind 6 to 8 mph, with gusts as high as 22 mph.

    Low: -8 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 37. Wind chill values as low as 7. Northwest wind 9 to 11 mph, with gusts as high as 36 mph.

    High: 37 °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: Mostly sunny, with a high near 35. Wind chill values as low as 16. Calm wind becoming north around 6 mph. Winds could gust as high as 17 mph.

    High: 35 °F

    Mostly 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 17 mph.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 42. West wind around 5 mph becoming light and variable  in the afternoon. Winds could gust as high as 15 mph.

    High: 42 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 23. Light northwest wind.

    Low: 23 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of snow.  Partly sunny, with a high near 37. Light and variable wind becoming north around 6 mph. Winds could gust as high as 20 mph.

    High: 37 °F

    Slight Chance
    Snow

  • Thursday Night

    Thursday Night: A chance of snow.  Mostly cloudy, with a low around 17.

    Low: 17 °F

    Chance Snow

Detailed Forecast

Overnight
Mostly clear, with a low around -8. West wind 6 to 8 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 37. Wind chill values as low as 7. Northwest wind 9 to 11 mph, with gusts as high as 36 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
Mostly sunny, with a high near 35. Wind chill values as low as 16. Calm wind becoming north 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 17 mph.
Wednesday
Partly sunny, with a high near 42. West wind around 5 mph becoming light and variable in the afternoon. Winds could gust as high as 15 mph.
Wednesday Night
Mostly cloudy, with a low around 23. Light northwest wind.
Thursday
A slight chance of snow. Partly sunny, with a high near 37. Light and variable wind becoming north around 6 mph. Winds could gust as high as 20 mph.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 17.
Friday
A chance of snow. Partly sunny, with a high near 36.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 24.
Saturday
Partly sunny, with a high near 46.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Mostly sunny, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Keystone SD
 43.92°N 103.41°W (Elev. 4708 ft)
2:21 am MST Jan 26, 2026
2am MST Jan 26, 2026-6pm MST Feb 1, 2026
 
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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