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

Severe Thunderstorms in Portions of the Mississippi Valley and Great Lakes

A few severe thunderstorms with large hail, are expected across parts of the middle and upper Mississippi River Valley tonight through early morning. Snow and a wintry mix overnight in the Upper Midwest into the Great Lakes can cause hazardous travel conditions. Fire weather concerns continue for a large portion of the central and southern High Plains and Four Corners region this evening. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Overcast

31°F

-1°C

Humidity 76%
Wind Speed N 10 mph
Barometer 30.02 in (1013.1 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 31 Mar 3:53 am MDT
Extended Forecast for

5 Miles E Custer County Airport SD

  • Overnight

    Overnight: A 20 percent chance of snow. Cloudy, with a steady temperature around 33. North wind 11 to 13 mph, with gusts as high as 21 mph.

    Low: 33 °F

    Slight Chance
    Snow

  • Tuesday

    Tuesday: A 50 percent chance of snow after 3pm. Cloudy, with a high near 37. North wind 9 to 11 mph becoming east in the afternoon. Winds could gust as high as 24 mph. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: Snow likely. Mostly cloudy, with a low around 25. Wind chill values as low as 16. East wind 9 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    Low: 25 °F

    Snow Likely

  • Wednesday

    Wednesday: Snow. High near 38. Wind chill values as low as 17. East wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 38 °F

    Snow

  • Wednesday Night

    Wednesday Night: Snow likely, mainly before midnight. Cloudy, with a low around 28. East wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Snow Likely

  • Thursday

    Thursday: A 50 percent chance of rain after noon. Partly sunny, with a high near 52. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 25 mph.

    High: 52 °F

    Partly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Rain before 9pm, then rain and snow between 9pm and 11pm, then snow after 11pm. Low around 28. East wind around 10 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%.

    Low: 28 °F

    Rain/Snow
    then Snow

  • Friday

    Friday: Snow. Mostly cloudy, with a high near 38. Northwest wind 9 to 13 mph, with gusts as high as 28 mph.

    High: 38 °F

    Snow

  • Friday Night

    Friday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 22.

    Low: 22 °F

    Snow Likely

Detailed Forecast

Overnight
A 20 percent chance of snow. Cloudy, with a steady temperature around 33. North wind 11 to 13 mph, with gusts as high as 21 mph.
Tuesday
A 50 percent chance of snow after 3pm. Cloudy, with a high near 37. North wind 9 to 11 mph becoming east in the afternoon. Winds could gust as high as 24 mph. New snow accumulation of less than a half inch possible.
Tuesday Night
Snow likely. Mostly cloudy, with a low around 25. Wind chill values as low as 16. East wind 9 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
Wednesday
Snow. High near 38. Wind chill values as low as 17. East wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Wednesday Night
Snow likely, mainly before midnight. Cloudy, with a low around 28. East wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday
A 50 percent chance of rain after noon. Partly sunny, with a high near 52. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 25 mph.
Thursday Night
Rain before 9pm, then rain and snow between 9pm and 11pm, then snow after 11pm. Low around 28. East wind around 10 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Friday
Snow. Mostly cloudy, with a high near 38. Northwest wind 9 to 13 mph, with gusts as high as 28 mph.
Friday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 22.
Saturday
A slight chance of snow before noon. Mostly sunny, with a high near 45.
Saturday Night
Mostly clear, with a low around 27.
Sunday
Sunny, with a high near 54.
Sunday Night
Partly cloudy, with a low around 32.
Monday
A slight chance of rain. Partly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles E Custer County Airport SD
 43.72°N 103.54°W (Elev. 5351 ft)
Last Update:
3:22 am MDT Mar 31, 2026
Forecast Valid:
4am MDT Mar 31, 2026-6pm MDT Apr 6, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation