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

Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

24°F

-4°C

Humidity 68%
Wind Speed W 8 G 18 mph
Barometer 30.03 in (1019.8 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 18 Apr 5:53 am MDT
Extended Forecast for

6 Miles NNW Keystone SD

  • Today

    Today: Isolated snow showers. Mostly sunny, with a high near 48. Northwest wind 6 to 14 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.

    High: 48 °F

    Isolated Snow
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 27. Northwest wind 5 to 10 mph becoming light west in the evening. Winds could gust as high as 29 mph.

    Low: 27 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 61. Calm wind becoming southeast 5 to 7 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. Southeast wind around 6 mph becoming calm. Winds could gust as high as 21 mph.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 78. Southwest wind 5 to 7 mph becoming north in the afternoon. Winds could gust as high as 22 mph.

    High: 78 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 43. North wind around 6 mph becoming calm in the evening. Winds could gust as high as 17 mph.

    Low: 43 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81. Calm wind becoming south 5 to 7 mph in the morning. Winds could gust as high as 24 mph.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 52. Southwest wind 3 to 6 mph. Winds could gust as high as 20 mph.

    Low: 52 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers after noon. Mostly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
Isolated snow showers. Mostly sunny, with a high near 48. Northwest wind 6 to 14 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 27. Northwest wind 5 to 10 mph becoming light west in the evening. Winds could gust as high as 29 mph.
Sunday
Sunny, with a high near 61. Calm wind becoming southeast 5 to 7 mph in the afternoon. Winds could gust as high as 23 mph.
Sunday Night
Mostly clear, with a low around 38. Southeast wind around 6 mph becoming calm. Winds could gust as high as 21 mph.
Monday
Mostly sunny, with a high near 78. Southwest wind 5 to 7 mph becoming north in the afternoon. Winds could gust as high as 22 mph.
Monday Night
Mostly clear, with a low around 43. North wind around 6 mph becoming calm in the evening. Winds could gust as high as 17 mph.
Tuesday
Sunny, with a high near 81. Calm wind becoming south 5 to 7 mph in the morning. Winds could gust as high as 24 mph.
Tuesday Night
Partly cloudy, with a low around 52. Southwest wind 3 to 6 mph. Winds could gust as high as 20 mph.
Wednesday
A chance of showers after noon. Mostly sunny, with a high near 80.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 43.
Thursday
Showers likely. Mostly sunny, with a high near 60.
Thursday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 27.
Friday
A chance of snow showers. Mostly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNW Keystone SD
 43.98°N 103.47°W (Elev. 4800 ft)
Last Update:
4:02 am MDT Apr 18, 2026
Forecast Valid:
6am MDT Apr 18, 2026-6pm MDT Apr 24, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation