Heavy Rain From the Central Plains to the Mid-Atlantic; Heat Wave Begins This Weekend

Strong to severe thunderstorms and heavy rain will impact portions of the central Plains into the Upper Midwest and the Mid-Atlantic through the weekend. A stretch of unusually hot and humid weather is expected across portions of the central U.S. and the Southeast beginning this weekend and continuing through next week. The heat may reach dangerous levels, particularly mid to late next week. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Mostly Cloudy

70°F

21°C

Humidity 55%
Wind Speed NE 13 mph
Barometer 30.14 in (1014.1 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 18 Jul 5:53 pm MDT
Extended Forecast for

3 Miles NE Keystone SD

  • Tonight

    Tonight: Isolated showers and thunderstorms.  Mostly cloudy, with a low around 60. Northeast wind around 5 mph becoming calm  in the evening. Winds could gust as high as 15 mph.  Chance of precipitation is 20%.

    Low: 60 °F

    Isolated
    T-storms

  • Saturday

    Saturday: Scattered showers and thunderstorms.  Partly sunny, with a high near 81. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 25 mph.  Chance of precipitation is 30%.

    High: 81 °F

    Scattered
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 63. South wind 5 to 10 mph becoming west in the evening. Winds could gust as high as 20 mph.

    Low: 63 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 88. West wind 5 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 64. East wind around 5 mph becoming west after midnight. Winds could gust as high as 15 mph.

    Low: 64 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 87. West wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph.  Chance of precipitation is 20%.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 64. East wind around 5 mph becoming west after midnight. Winds could gust as high as 20 mph.

    Low: 64 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 85. Northwest wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, mainly before midnight.  Partly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Isolated showers and thunderstorms. Mostly cloudy, with a low around 60. Northeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 15 mph. Chance of precipitation is 20%.
Saturday
Scattered showers and thunderstorms. Partly sunny, with a high near 81. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 30%.
Saturday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 63. South wind 5 to 10 mph becoming west in the evening. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 88. West wind 5 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 64. East wind around 5 mph becoming west after midnight. Winds could gust as high as 15 mph.
Monday
A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 87. West wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Monday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 64. East wind around 5 mph becoming west after midnight. Winds could gust as high as 20 mph.
Tuesday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 85. Northwest wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
A chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 62.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 80.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Keystone SD
 43.92°N 103.38°W (Elev. 4416 ft)
4:30 pm MDT Jul 18, 2025
6pm MDT Jul 18, 2025-6pm MDT Jul 25, 2025
 
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Additional Resources

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Hourly Weather Forecast

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