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

Hazardous Spring Weather Shifts to the Eastern and Northwest U.S. Wednesday

Isolated to scattered severe thunderstorms are expected Wednesday from the ArkLaTex and Lower Mississippi Valley northeastward through the Ohio Valley and Mid-Atlantic. Thunderstorms may produce heavy to excessive rain that could pose a flooding threat from east Texas into Upstate New York. A moderate atmospheric river will bring heavy snow and high winds to the Northwest U.S. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Overcast

20°F

-7°C

Humidity 92%
Wind Speed Calm
Barometer 30.00 in (1020.2 mb)
Dewpoint 18°F (-8°C)
Visibility 9.00 mi
Last update 11 Mar 12:53 am MDT
Extended Forecast for

2 Miles ESE Keystone SD

  • Overnight

    Overnight: Mostly cloudy, with a low around 21. Light west wind.

    Low: 21 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 42. Wind chill values as low as 15. West wind 5 to 10 mph, with gusts as high as 29 mph.

    High: 42 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 26. West wind 5 to 9 mph, with gusts as high as 23 mph.

    Low: 26 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 62. Breezy, with a west wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 46 mph.

    High: 62 °F

    Mostly Sunny
    then Slight
    Chance Rain
    and Breezy

  • Thursday Night

    Thursday Night: Rain likely before 8pm, then snow likely. Mostly cloudy, with a low around 29. Blustery, with a northwest wind 16 to 21 mph becoming light west after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Rain/Snow
    Likely and
    Blustery then
    Snow Likely

  • Friday

    Friday: A chance of snow before 3pm, then a chance of rain and snow. Mostly cloudy, with a high near 44. Calm wind becoming south 5 to 8 mph in the morning. Winds could gust as high as 17 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 44 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Friday Night

    Friday Night: A chance of rain and snow before 7pm, then a chance of snow. Mostly cloudy, with a low around 27. Northeast wind around 6 mph becoming calm in the evening. Winds could gust as high as 16 mph. Chance of precipitation is 50%.

    Low: 27 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Saturday

    Saturday: Rain and snow likely before 2pm, then rain likely between 2pm and 5pm, then rain and snow likely after 5pm. Mostly cloudy, with a high near 47. Calm wind becoming east 5 to 9 mph in the morning. Winds could gust as high as 24 mph.

    High: 47 °F

    Rain/Snow
    Likely

  • Saturday Night

    Saturday Night: Rain and snow, becoming all snow after midnight. The snow could be heavy at times. Mostly cloudy, with a low around 16.

    Low: 16 °F

    Rain/Snow
    then Snow
    Likely

Detailed Forecast

Overnight
Mostly cloudy, with a low around 21. Light west wind.
Wednesday
Sunny, with a high near 42. Wind chill values as low as 15. West wind 5 to 10 mph, with gusts as high as 29 mph.
Wednesday Night
Mostly clear, with a low around 26. West wind 5 to 9 mph, with gusts as high as 23 mph.
Thursday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 62. Breezy, with a west wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 46 mph.
Thursday Night
Rain likely before 8pm, then snow likely. Mostly cloudy, with a low around 29. Blustery, with a northwest wind 16 to 21 mph becoming light west after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
A chance of snow before 3pm, then a chance of rain and snow. Mostly cloudy, with a high near 44. Calm wind becoming south 5 to 8 mph in the morning. Winds could gust as high as 17 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Friday Night
A chance of rain and snow before 7pm, then a chance of snow. Mostly cloudy, with a low around 27. Northeast wind around 6 mph becoming calm in the evening. Winds could gust as high as 16 mph. Chance of precipitation is 50%.
Saturday
Rain and snow likely before 2pm, then rain likely between 2pm and 5pm, then rain and snow likely after 5pm. Mostly cloudy, with a high near 47. Calm wind becoming east 5 to 9 mph in the morning. Winds could gust as high as 24 mph.
Saturday Night
Rain and snow, becoming all snow after midnight. The snow could be heavy at times. Mostly cloudy, with a low around 16.
Sunday
A chance of snow. Partly sunny, with a high near 29.
Sunday Night
A slight chance of snow. Mostly cloudy, with a low around 14.
Monday
A chance of snow. Mostly cloudy, with a high near 39.
Monday Night
A slight chance of snow. Mostly cloudy, with a low around 29.
Tuesday
A slight chance of rain and snow. Partly sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Keystone SD
 43.9°N 103.37°W (Elev. 4199 ft)
Last Update:
12:32 am MDT Mar 11, 2026
Forecast Valid:
1am MDT Mar 11, 2026-6pm MDT Mar 17, 2026
 
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