Another Arctic Blast in the East; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the upper Ohio Valley, Mid-Atlantic, Gulf Coast and Southeast U.S. this weekend. A rapidly deepening storm will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia into Sunday. Storm-force winds and coastal flooding will be possible along the East Coast. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

34°F

1°C

Humidity 54%
Wind Speed Calm
Barometer 30.10 in (1020.4 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 1 Feb 7:53 am MST
Extended Forecast for

5 Miles ESE Keystone SD

  • Today

    Today: Partly sunny, with a high near 52. Calm wind becoming east around 5 mph.

    High: 52 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 32. Calm wind becoming northwest around 6 mph after midnight. Winds could gust as high as 15 mph.

    Low: 32 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 52. Northwest wind 8 to 15 mph, with gusts as high as 33 mph.

    High: 52 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31. Northwest wind around 6 mph, with gusts as high as 21 mph.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain and snow before noon, then a slight chance of rain between noon and 4pm, then a slight chance of rain and snow after 4pm.  Partly sunny, with a high near 47. Northwest wind 6 to 13 mph, with gusts as high as 29 mph.  Chance of precipitation is 20%.

    High: 47 °F

    Slight Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 27. Northwest wind 5 to 7 mph, with gusts as high as 20 mph.

    Low: 27 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 51. Light and variable wind becoming southwest around 6 mph in the morning. Winds could gust as high as 17 mph.

    High: 51 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 38. West wind 5 to 9 mph, with gusts as high as 22 mph.

    Low: 38 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 52. Calm wind becoming east around 5 mph.
Tonight
Mostly cloudy, with a low around 32. Calm wind becoming northwest around 6 mph after midnight. Winds could gust as high as 15 mph.
Monday
Mostly sunny, with a high near 52. Northwest wind 8 to 15 mph, with gusts as high as 33 mph.
Monday Night
Partly cloudy, with a low around 31. Northwest wind around 6 mph, with gusts as high as 21 mph.
Tuesday
A slight chance of rain and snow before noon, then a slight chance of rain between noon and 4pm, then a slight chance of rain and snow after 4pm. Partly sunny, with a high near 47. Northwest wind 6 to 13 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 27. Northwest wind 5 to 7 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 51. Light and variable wind becoming southwest around 6 mph in the morning. Winds could gust as high as 17 mph.
Wednesday Night
Mostly cloudy, with a low around 38. West wind 5 to 9 mph, with gusts as high as 22 mph.
Thursday
Sunny, with a high near 60.
Thursday Night
Mostly clear, with a low around 33.
Friday
Sunny, with a high near 53.
Friday Night
Mostly clear, with a low around 30.
Saturday
Mostly sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles ESE Keystone SD
 43.88°N 103.34°W (Elev. 3999 ft)
7:52 am MST Feb 1, 2026
7am MST Feb 1, 2026-6pm MST Feb 7, 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