Severe Thunderstorms and Heavy Rainfall from the Lower Mississippi Valley to the Mid-Atlantic; Active Pattern Continues in Hawaii

Scattered severe thunderstorms are expected today from the ArkLaTex and Lower Mississippi Valley through the Ohio Valley and Mid-Atlantic. Thunderstorms may produce heavy to excessive rain that could pose a flooding threat today from east Texas into New York. A powerful kona storm will continue to impact Hawaii through Saturday, bringing heavy rainfall, strong winds, and severe thunderstorms. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

16°F

-9°C

Humidity 92%
Wind Speed Calm
Barometer 30.14 in (1027.0 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Last update 11 Mar 7:53 am MDT
Extended Forecast for

3 Miles NNE Keystone SD

  • Today

    Today: Sunny, with a high near 40. Wind chill values as low as 10. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 29 mph.

    High: 40 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 25. West wind 6 to 11 mph, with gusts as high as 25 mph.

    Low: 25 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of rain after noon.  Mostly sunny, with a high near 59. West wind 13 to 18 mph, with gusts as high as 45 mph.

    High: 59 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely before 7pm, then snow likely.  Mostly cloudy, with a low around 27. Northwest wind 13 to 18 mph becoming light  after midnight. Winds could gust as high as 40 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Rain/Snow
    Likely then
    Snow Likely

  • Friday

    Friday: Snow likely, mainly before noon.  Mostly cloudy, with a high near 43. Light and variable wind becoming south 5 to 7 mph in the morning. Winds could gust as high as 17 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 43 °F

    Snow Likely

  • Friday Night

    Friday Night: A 50 percent chance of snow.  Mostly cloudy, with a low around 26. Northeast wind around 6 mph becoming calm  in the evening. Winds could gust as high as 15 mph.  New snow accumulation of less than a half inch possible.

    Low: 26 °F

    Chance Snow

  • Saturday

    Saturday: Snow likely before 1pm, then rain and snow likely.  Mostly cloudy, with a high near 46. Light and variable wind becoming east 5 to 9 mph in the morning. Winds could gust as high as 24 mph.  Chance of precipitation is 70%.

    High: 46 °F

    Chance Snow
    then
    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 14. Northwest wind 9 to 14 mph, with gusts as high as 32 mph.

    Low: 14 °F

    Rain/Snow
    then Snow
    Likely

  • Sunday

    Sunday: A chance of snow.  Partly sunny, with a high near 27.

    High: 27 °F

    Chance Snow

Detailed Forecast

Today
Sunny, with a high near 40. Wind chill values as low as 10. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 29 mph.
Tonight
Mostly clear, with a low around 25. West wind 6 to 11 mph, with gusts as high as 25 mph.
Thursday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 59. West wind 13 to 18 mph, with gusts as high as 45 mph.
Thursday Night
Rain likely before 7pm, then snow likely. Mostly cloudy, with a low around 27. Northwest wind 13 to 18 mph becoming light after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
Snow likely, mainly before noon. Mostly cloudy, with a high near 43. Light and variable wind becoming south 5 to 7 mph in the morning. Winds could gust as high as 17 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 26. Northeast wind around 6 mph becoming calm in the evening. Winds could gust as high as 15 mph. New snow accumulation of less than a half inch possible.
Saturday
Snow likely before 1pm, then rain and snow likely. Mostly cloudy, with a high near 46. Light and variable wind becoming east 5 to 9 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 70%.
Saturday Night
Rain and snow, becoming all snow after midnight. The snow could be heavy at times. Mostly cloudy, with a low around 14. Northwest wind 9 to 14 mph, with gusts as high as 32 mph.
Sunday
A chance of snow. Partly sunny, with a high near 27.
Sunday Night
A slight chance of snow. Mostly cloudy, with a low around 13.
Monday
A chance of snow. Mostly cloudy, with a high near 38.
Monday Night
A slight chance of snow. Mostly cloudy, with a low around 28.
Tuesday
A slight chance of rain and snow. Partly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Keystone SD
 43.92°N 103.41°W (Elev. 4708 ft)
6:21 am MDT Mar 11, 2026
7am MDT Mar 11, 2026-6pm MDT Mar 17, 2026
 
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