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

Custer, Custer County Airport (KCUT)

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

Fair

57°F

14°C

Humidity 93%
Wind Speed NW 6 mph
Barometer 30.35 in (1022.7 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 15 Aug 10:53 pm MDT
Extended Forecast for

6 Miles NNW Keystone SD

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before midnight. Partly cloudy, with a low around 53. Calm wind. Chance of precipitation is 70%.

    Low: 53 °F

    Showers
    Likely

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 76. Calm wind becoming southeast around 5 mph. Winds could gust as high as 16 mph. Chance of precipitation is 50%.

    High: 76 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 55. Light and variable wind.

    Low: 55 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 82. Light and variable wind. Winds could gust as high as 17 mph. Chance of precipitation is 70%.

    High: 82 °F

    Mostly Sunny
    then Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Calm wind. Chance of precipitation is 50%.

    Low: 54 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 78. Calm wind becoming north around 5 mph. Winds could gust as high as 16 mph. Chance of precipitation is 70%.

    High: 78 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 79.

    High: 79 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 53.

    Low: 53 °F

    Slight Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Showers likely and possibly a thunderstorm before midnight. Partly cloudy, with a low around 53. Calm wind. Chance of precipitation is 70%.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 76. Calm wind becoming southeast around 5 mph. Winds could gust as high as 16 mph. Chance of precipitation is 50%.
Sunday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 55. Light and variable wind.
Monday
Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 82. Light and variable wind. Winds could gust as high as 17 mph. Chance of precipitation is 70%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Calm wind. Chance of precipitation is 50%.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 78. Calm wind becoming north around 5 mph. Winds could gust as high as 16 mph. Chance of precipitation is 70%.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53.
Wednesday
A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 79.
Wednesday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 53.
Thursday
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 55.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNW Keystone SD
 43.98°N 103.47°W (Elev. 4800 ft)
Last Update:
10:51 pm MDT Aug 15, 2026
Forecast Valid:
11pm MDT Aug 15, 2026-6pm MDT Aug 22, 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