Heat Wave Persists Over the Central U.S.; Significant Flooding Expected in the Northern Mid-Atlantic Tuesday

Dangerous and extreme heat will remain across portions of the Central U.S. this week, persisting across the Mid to Lower Mississippi Valleys, Gulf Coast, Southern Plains and portions of Texas. A heat wave over the Southwest will intensify late this week. Severe thunderstorms and flash flooding will spread from the Great Lakes/Ohio Valley to the Mid-Atlantic and Northeast the next few days. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

63°F

17°C

Humidity 90%
Wind Speed Calm
Barometer 30.18 in (1014.3 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 28 Jul 12:53 am MDT
Extended Forecast for

Custer SD

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 65. Light west wind.

    Low: 65 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after noon.  Patchy smoke after 10am. Mostly sunny, with a high near 84. Calm wind becoming east 5 to 7 mph in the afternoon. Winds could gust as high as 16 mph.

    High: 84 °F

    Patchy Smoke
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Patchy smoke before 1am. Partly cloudy, with a low around 60. East wind around 6 mph becoming calm  in the evening. Winds could gust as high as 16 mph.

    Low: 60 °F

    Patchy Smoke

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 87. Calm wind becoming southeast 5 to 8 mph in the morning. Winds could gust as high as 20 mph.

    High: 87 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before midnight.  Cloudy, then gradually becoming partly cloudy, with a low around 61. Southeast wind around 6 mph becoming calm  in the evening. Winds could gust as high as 17 mph.  Chance of precipitation is 70%.

    Low: 61 °F

    Showers
    Likely then
    Mostly Cloudy

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm after noon.  Mostly sunny, with a high near 86. Calm wind becoming north 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph.  Chance of precipitation is 60%.

    High: 86 °F

    Mostly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before midnight.  Mostly clear, with a low around 58.

    Low: 58 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: A chance of showers and thunderstorms after noon.  Sunny, with a high near 85.

    High: 85 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 65. Light west wind.
Tuesday
A 40 percent chance of showers and thunderstorms after noon. Patchy smoke after 10am. Mostly sunny, with a high near 84. Calm wind becoming east 5 to 7 mph in the afternoon. Winds could gust as high as 16 mph.
Tuesday Night
Patchy smoke before 1am. Partly cloudy, with a low around 60. East wind around 6 mph becoming calm in the evening. Winds could gust as high as 16 mph.
Wednesday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 87. Calm wind becoming southeast 5 to 8 mph in the morning. Winds could gust as high as 20 mph.
Wednesday Night
Showers likely and possibly a thunderstorm before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 61. Southeast wind around 6 mph becoming calm in the evening. Winds could gust as high as 17 mph. Chance of precipitation is 70%.
Thursday
Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 86. Calm wind becoming north 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%.
Thursday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 58.
Friday
A chance of showers and thunderstorms after noon. Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 86.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 93.
Sunday Night
Mostly clear, with a low around 63.
Monday
Sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Custer SD
 43.76°N 103.6°W (Elev. 5417 ft)
12:32 am MDT Jul 28, 2026
1am MDT Jul 28, 2026-6pm MDT Aug 3, 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