Heavy Snow from the Midwest into the Great Lakes; Locally Heavy Rain in the Western Gulf Coast

A significant winter storm will produce a broad area of moderate to heavy snow from the Midwest through the western Great Lakes. Significant snow accumulations of 6-12 inches, and locally more than 1 foot, and gusty wind may cause hazardous travel conditions. Thunderstorms, some severe, and showers may produce locally heavy rain and isolated flash flooding along the western Gulf Coast. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

A Few Clouds

6°F

-14°C

Humidity 69%
Wind Speed NW 6 mph
Barometer 30.09 in (1026.0 mb)
Dewpoint -2°F (-19°C)
Visibility 10.00 mi
Wind Chill-5°F (-21°C)
Last update 29 Nov 6:53 am MST
Extended Forecast for

4 Miles NW Keystone SD

Winter Weather Advisory November 29, 07:18am until November 29, 11:00am
Click here for hazard details and duration
...
  •  
    Winter Weather Advisory November 29, 07:18am until November 29, 11:00am

    NOW until 11:00am Sat

    Winter Weather Advisory

  • Today

    High: 18 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around -1. Calm wind.

    Low: -1 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of snow after 11am.  Increasing clouds, with a high near 17. Wind chill values as low as -1. Calm wind becoming south around 6 mph in the afternoon. Winds could gust as high as 16 mph.

    High: 17 °F

    Slight Chance
    Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before 11pm.  Mostly cloudy, then gradually becoming mostly clear, with a steady temperature around 12. Wind chill values as low as zero. South wind around 7 mph becoming west after midnight. Winds could gust as high as 15 mph.

    Low: 12 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 30. West wind around 7 mph, with gusts as high as 22 mph.

    High: 30 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a temperature rising to around 24 by 5am. West wind 7 to 9 mph, with gusts as high as 17 mph.

    Low: 20 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of snow after 11am.  Mostly cloudy, with a high near 36. West wind 5 to 7 mph, with gusts as high as 17 mph.

    High: 36 °F

    Slight Chance
    Snow

  • Tuesday Night

    Tuesday Night: A chance of snow.  Mostly cloudy, with a low around 15. Northwest wind 5 to 8 mph, with gusts as high as 17 mph.

    Low: 15 °F

    Chance Snow

Detailed Forecast

Today
Mostly sunny, with a high near 18. Wind chill values as low as -10. Northwest wind 5 to 11 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around -1. Calm wind.
Sunday
A 20 percent chance of snow after 11am. Increasing clouds, with a high near 17. Wind chill values as low as -1. Calm wind becoming south around 6 mph in the afternoon. Winds could gust as high as 16 mph.
Sunday Night
A 20 percent chance of snow before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a steady temperature around 12. Wind chill values as low as zero. South wind around 7 mph becoming west after midnight. Winds could gust as high as 15 mph.
Monday
Sunny, with a high near 30. West wind around 7 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a temperature rising to around 24 by 5am. West wind 7 to 9 mph, with gusts as high as 17 mph.
Tuesday
A 20 percent chance of snow after 11am. Mostly cloudy, with a high near 36. West wind 5 to 7 mph, with gusts as high as 17 mph.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 15. Northwest wind 5 to 8 mph, with gusts as high as 17 mph.
Wednesday
A chance of snow, mainly before 11am. Partly sunny, with a high near 21.
Wednesday Night
Partly cloudy, with a low around 11.
Thursday
Mostly sunny, with a high near 33.
Thursday Night
A slight chance of snow. Mostly cloudy, with a low around 24.
Friday
A slight chance of snow. Partly sunny, with a high near 37.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Keystone SD
 43.94°N 103.47°W (Elev. 5482 ft)
6:26 am MST Nov 29, 2025
7am MST Nov 29, 2025-6pm MST Dec 5, 2025
 
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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