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 >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

-7°F

-22°C

Humidity 87%
Wind Speed NW 3 mph
Barometer 30.14 in (1031.3 mb)
Dewpoint -10°F (-23°C)
Visibility 10.00 mi
Last update 29 Nov 11:53 pm MST
Extended Forecast for

3 Miles NE Keystone SD

  • Overnight

    Overnight: Partly cloudy, with a low around 0. Calm wind.

    Low: 0 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 21. Wind chill values as low as 1. Calm wind becoming south 5 to 7 mph in the morning.

    High: 21 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming mostly clear, with a steady temperature around 14. Wind chill values as low as 4. South wind around 6 mph becoming west after midnight. Winds could gust as high as 16 mph.

    Low: 14 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 35. Wind chill values as low as 7. Northwest wind 6 to 8 mph, with gusts as high as 22 mph.

    High: 35 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a temperature falling to near 21 by 9pm, then rising to around 27 during the remainder of the night. West wind around 6 mph, with gusts as high as 16 mph.

    Low: 21 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of snow after 11am.  Mostly cloudy, with a high near 40. West wind around 6 mph, with gusts as high as 17 mph.

    High: 40 °F

    Slight Chance
    Snow

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow.  Mostly cloudy, with a low around 18. Northwest wind around 7 mph, with gusts as high as 18 mph.

    Low: 18 °F

    Chance Snow

  • Wednesday

    Wednesday: A chance of snow before 11am.  Partly sunny, with a high near 25. North wind around 6 mph becoming light and variable  in the afternoon. Winds could gust as high as 17 mph.

    High: 25 °F

    Chance Snow
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 13.

    Low: 13 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 0. Calm wind.
Sunday
Partly sunny, with a high near 21. Wind chill values as low as 1. Calm wind becoming south 5 to 7 mph in the morning.
Sunday Night
Mostly cloudy, then gradually becoming mostly clear, with a steady temperature around 14. Wind chill values as low as 4. South wind around 6 mph becoming west after midnight. Winds could gust as high as 16 mph.
Monday
Sunny, with a high near 35. Wind chill values as low as 7. Northwest wind 6 to 8 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a temperature falling to near 21 by 9pm, then rising to around 27 during the remainder of the night. West wind around 6 mph, with gusts as high as 16 mph.
Tuesday
A 20 percent chance of snow after 11am. Mostly cloudy, with a high near 40. West wind around 6 mph, with gusts as high as 17 mph.
Tuesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 18. Northwest wind around 7 mph, with gusts as high as 18 mph.
Wednesday
A chance of snow before 11am. Partly sunny, with a high near 25. North wind around 6 mph becoming light and variable in the afternoon. Winds could gust as high as 17 mph.
Wednesday Night
Partly cloudy, with a low around 13.
Thursday
Mostly sunny, with a high near 39.
Thursday Night
A slight chance of snow. Mostly cloudy, with a low around 26.
Friday
A slight chance of snow. Partly sunny, with a high near 41.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 28.
Saturday
A chance of rain and snow. Partly sunny, with a high near 43.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Keystone SD
 43.92°N 103.38°W (Elev. 4416 ft)
12:26 am MST Nov 30, 2025
12am MST Nov 30, 2025-6pm MST Dec 6, 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