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

Strong to Severe Thunderstorms Continue Tonight in the East; Early Heat Wave in the West

Scattered strong to severe storms with damaging winds and potentially a tornado or two are expected tonight from the coastal Carolinas into the Mid-Atlantic states. An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Overcast

32°F

0°C

Humidity 79%
Wind Speed W 13 mph
Barometer 29.75 in (1009.9 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 17 Mar 3:53 am MDT
Extended Forecast for

3 Miles NNE Keystone SD

  • Overnight

    Overnight: A 20 percent chance of rain. Mostly cloudy, with a steady temperature around 38. West wind 3 to 6 mph. Winds could gust as high as 17 mph.

    Low: 38 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: Mostly sunny, with a high near 63. Northwest wind 7 to 15 mph, with gusts as high as 40 mph.

    High: 63 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 40. Northwest wind 6 to 13 mph, with gusts as high as 34 mph.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 70. West wind 6 to 10 mph, with gusts as high as 28 mph.

    High: 70 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44. West wind around 6 mph, with gusts as high as 20 mph.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 71. West wind 5 to 8 mph, with gusts as high as 25 mph.

    High: 71 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48. West wind 3 to 6 mph. Winds could gust as high as 15 mph.

    Low: 48 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 74. Northwest wind 5 to 8 mph, with gusts as high as 25 mph.

    High: 74 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of rain. Mostly cloudy, with a steady temperature around 38. West wind 3 to 6 mph. Winds could gust as high as 17 mph.
Tuesday
Mostly sunny, with a high near 63. Northwest wind 7 to 15 mph, with gusts as high as 40 mph.
Tuesday Night
Partly cloudy, with a low around 40. Northwest wind 6 to 13 mph, with gusts as high as 34 mph.
Wednesday
Mostly sunny, with a high near 70. West wind 6 to 10 mph, with gusts as high as 28 mph.
Wednesday Night
Partly cloudy, with a low around 44. West wind around 6 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 71. West wind 5 to 8 mph, with gusts as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 48. West wind 3 to 6 mph. Winds could gust as high as 15 mph.
Friday
Mostly sunny, with a high near 74. Northwest wind 5 to 8 mph, with gusts as high as 25 mph.
Friday Night
Mostly clear, with a low around 49.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
A slight chance of rain and snow. Partly cloudy, with a low around 36.
Sunday
Partly sunny, with a high near 50.
Sunday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 32.
Monday
A slight chance of rain and snow. Partly sunny, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Keystone SD
 43.92°N 103.41°W (Elev. 4708 ft)
Last Update:
3:41 am MDT Mar 17, 2026
Forecast Valid:
4am MDT Mar 17, 2026-6pm MDT Mar 23, 2026
 
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Additional Resources

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Chance of Precipitation