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

Heat Wave and Severe Thunderstorms this Independence Day

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Midwest, and Mid-Atlantic. Numerous temperature records are expected. Clusters of severe thunderstorms will move across parts of the Allegheny Plateau into Mid Atlantic this Independence Day, with potential for widespread damaging winds. Additional severe thunderstorms in the Great Plains. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Overcast

64°F

18°C

Humidity 87%
Wind Speed Calm
Barometer 30.22 in (1018.4 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 4 Jul 3:53 pm MDT
Extended Forecast for

Custer County Airport SD

  • Independence Day

    Independence Day: A 20 percent chance of showers and thunderstorms. Partly sunny, with a steady temperature around 73. East wind around 6 mph, with gusts as high as 16 mph.

    High: 73 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 58. East wind around 6 mph becoming calm in the evening. Winds could gust as high as 16 mph.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 86. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 22 mph.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61. Southeast wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 22 mph.

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86. West wind 5 to 11 mph becoming east in the afternoon. Winds could gust as high as 22 mph.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59. East wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 23 mph.

    Low: 59 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 83. Chance of precipitation is 60%.

    High: 83 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 57.

    Low: 57 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 79.

    High: 79 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Independence Day
A 20 percent chance of showers and thunderstorms. Partly sunny, with a steady temperature around 73. East wind around 6 mph, with gusts as high as 16 mph.
Tonight
Mostly clear, with a low around 58. East wind around 6 mph becoming calm in the evening. Winds could gust as high as 16 mph.
Sunday
Sunny, with a high near 86. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 22 mph.
Sunday Night
Mostly clear, with a low around 61. Southeast wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 22 mph.
Monday
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86. West wind 5 to 11 mph becoming east in the afternoon. Winds could gust as high as 22 mph.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59. East wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 23 mph.
Tuesday
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 83. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 57.
Wednesday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 79.
Wednesday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 55.
Thursday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 79.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 56.
Friday
A slight chance of showers and thunderstorms. Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Custer County Airport SD
 43.73°N 103.63°W (Elev. 5531 ft)
Last Update:
2:27 pm MDT Jul 4, 2026
Forecast Valid:
4pm MDT Jul 4, 2026-6pm MDT Jul 11, 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