Wet and Cool in the East this Memorial Day Weekend; Well Above Normal Temperatures in the Northern Plains

A wet Memorial Day weekend is in store for the East, with widespread rainfall of 1 to more than 2 inches expected from the Gulf Coast to southern New England. Well above normal temperatures are forecast to build across the northern Plains. Another round of heavy to excessive rainfall is expected to impact the western Gulf Coast this weekend with Flood Watches in effect. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

A Few Clouds

47°F

8°C

Humidity 56%
Wind Speed NW 14 G 36 mph
Barometer 29.91 in (1011.2 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 22 May 10:53 am MDT
Extended Forecast for

5 Miles SE Keystone SD

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 59. Northwest wind 11 to 16 mph, with gusts as high as 34 mph.

    High: 59 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 42. North wind 5 to 9 mph becoming light and variable. Winds could gust as high as 23 mph.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 70. West wind around 6 mph becoming light and variable  in the afternoon. Winds could gust as high as 21 mph.

    High: 70 °F

    Sunny then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 49. Calm wind becoming west around 6 mph after midnight. Winds could gust as high as 17 mph.

    Low: 49 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 81. Light and variable wind becoming south 5 to 7 mph in the morning. Winds could gust as high as 20 mph.

    High: 81 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 57. East wind around 5 mph becoming calm. Winds could gust as high as 16 mph.

    Low: 57 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 82. Breezy.

    High: 82 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms and
    Breezy

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 59. Northwest wind 11 to 16 mph, with gusts as high as 34 mph.
Tonight
Mostly clear, with a low around 42. North wind 5 to 9 mph becoming light and variable. Winds could gust as high as 23 mph.
Saturday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 70. West wind around 6 mph becoming light and variable in the afternoon. Winds could gust as high as 21 mph.
Saturday Night
Mostly clear, with a low around 49. Calm wind becoming west around 6 mph after midnight. Winds could gust as high as 17 mph.
Sunday
Sunny, with a high near 81. Light and variable wind becoming south 5 to 7 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
Mostly clear, with a low around 57. East wind around 5 mph becoming calm. Winds could gust as high as 16 mph.
Memorial Day
Sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 82. Breezy.
Tuesday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 58. Breezy.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 75.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 54.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SE Keystone SD
 43.83°N 103.37°W (Elev. 4400 ft)
8:36 am MDT May 22, 2026
11am MDT May 22, 2026-6pm MDT May 28, 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