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

55°F

13°C

Humidity 19%
Wind Speed NW 8 G 17 mph
Barometer 30.14 in (1019.1 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 19 Apr 12:53 pm MDT
Extended Forecast for

3 Miles NNE Keystone SD

  • This Afternoon

    This Afternoon: Sunny, with a high near 56. Southeast wind around 8 mph, with gusts as high as 24 mph.

    High: 56 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 38. Southeast wind 5 to 7 mph becoming light and variable. Winds could gust as high as 21 mph.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 73. West wind around 7 mph becoming northeast in the afternoon. Winds could gust as high as 21 mph.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47. North wind around 5 mph becoming calm  in the evening. Winds could gust as high as 15 mph.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. West wind 5 to 7 mph becoming southeast in the afternoon. Winds could gust as high as 22 mph.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 55. Light and variable wind becoming southwest around 6 mph after midnight. Winds could gust as high as 17 mph.

    Low: 55 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after noon.  Partly sunny, with a high near 79. Southwest wind 6 to 13 mph, with gusts as high as 34 mph.

    High: 79 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely, mainly before midnight.  Mostly cloudy, with a low around 42. West wind 11 to 14 mph, with gusts as high as 34 mph.

    Low: 42 °F

    Showers
    Likely

  • Thursday

    Thursday: Rain showers likely before 9am, then rain and snow showers likely.  Partly sunny, with a high near 50. Breezy.

    High: 50 °F

    Rain/Snow
    Likely and
    Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 56. Southeast wind around 8 mph, with gusts as high as 24 mph.
Tonight
Mostly clear, with a low around 38. Southeast wind 5 to 7 mph becoming light and variable. Winds could gust as high as 21 mph.
Monday
Sunny, with a high near 73. West wind around 7 mph becoming northeast in the afternoon. Winds could gust as high as 21 mph.
Monday Night
Mostly clear, with a low around 47. North wind around 5 mph becoming calm in the evening. Winds could gust as high as 15 mph.
Tuesday
Sunny, with a high near 80. West wind 5 to 7 mph becoming southeast in the afternoon. Winds could gust as high as 22 mph.
Tuesday Night
Partly cloudy, with a low around 55. Light and variable wind becoming southwest around 6 mph after midnight. Winds could gust as high as 17 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 79. Southwest wind 6 to 13 mph, with gusts as high as 34 mph.
Wednesday Night
Showers likely, mainly before midnight. Mostly cloudy, with a low around 42. West wind 11 to 14 mph, with gusts as high as 34 mph.
Thursday
Rain showers likely before 9am, then rain and snow showers likely. Partly sunny, with a high near 50. Breezy.
Thursday Night
A chance of snow showers before midnight. Mostly cloudy, with a low around 27. Blustery.
Friday
A chance of snow showers. Mostly sunny, with a high near 45.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 26.
Saturday
A chance of snow showers. Partly sunny, with a high near 46.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Keystone SD
 43.92°N 103.41°W (Elev. 4708 ft)
12:32 pm MDT Apr 19, 2026
1pm MDT Apr 19, 2026-6pm MDT Apr 25, 2026
 
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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