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

Severe Weather and Flooding Threats for the Central U.S.; Dangerous Heat in the Southern and Western U.S.

Severe weather and flooding threats will continue for portions of the central U.S. over the next couple of days, with multiple rounds of thunderstorms expected. Dangerous heat will persist across the southern and western U.S. through mid-week. Hot and dry conditions will fuel fire weather concerns for the Intermountain West, where dry thunderstorms may spark additional wildfires. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Partly Cloudy

54°F

12°C

Humidity 87%
Wind Speed Calm
Barometer 30.33 in (1022.5 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 23 Jun 9:53 pm MDT
Extended Forecast for

Custer County Airport SD

  • Tonight

    Tonight: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers between 10am and noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 62. Calm wind becoming east 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 40%.

    High: 62 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before midnight, then a chance of showers between midnight and 3am, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 45. East wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

    Low: 45 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 56. Southeast wind 5 to 9 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.

    High: 56 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 3am, then a chance of showers after 3am. Low around 48. Southeast wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 80%.

    Low: 48 °F

    Showers then
    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 74. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 23 mph.

    High: 74 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 52.

    Low: 52 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 45. Calm wind.
Wednesday
A chance of showers between 10am and noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 62. Calm wind becoming east 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 40%.
Wednesday Night
A slight chance of showers and thunderstorms before midnight, then a chance of showers between midnight and 3am, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 45. East wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 40%.
Thursday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 56. Southeast wind 5 to 9 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.
Thursday Night
Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 3am, then a chance of showers after 3am. Low around 48. Southeast wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 80%.
Friday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 74. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 23 mph.
Friday Night
A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 54.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
A chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 52.
Sunday
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 74.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 46.
Monday
Mostly sunny, with a high near 72.
Monday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 48.
Tuesday
A slight chance of showers and thunderstorms. Sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Custer County Airport SD
 43.73°N 103.63°W (Elev. 5531 ft)
Last Update:
10:32 pm MDT Jun 23, 2026
Forecast Valid:
10pm MDT Jun 23, 2026-6pm MDT Jun 30, 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