Thunderstorms and Heavy Rainfall from the Plains to the Mid-Atlantic

Severe thunderstorms producing damaging winds are most likely over parts of the Dakotas into Minnesota from this afternoon into the overnight, with other isolated storms producing hail or wind over the northern High Plains. In the Northern Plains into the Upper Great Lakes and Mid-Atlantic, heavy to excessive rain may bring flash and urban flooding through Wednesday. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

72°F

22°C

Humidity 53%
Wind Speed Vrbl 6 G 17 mph
Barometer 30.18 in (1014.6 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 7 Jul 10:53 am MDT
Extended Forecast for

2 Miles NNE Keystone SD

  • Today

    Today: A 50 percent chance of showers and thunderstorms, mainly after 3pm. Some of the storms could be severe.  Partly sunny, with a high near 90. Southeast wind around 6 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 90 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before midnight. Some of the storms could be severe.  Mostly cloudy, with a low around 62. Northwest wind around 6 mph becoming calm  in the evening. Winds could gust as high as 22 mph.  Chance of precipitation is 60%.

    Low: 62 °F

    Severe
    Thunderstorms
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms before 9am, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 80. Calm wind becoming east around 5 mph in the morning. Winds could gust as high as 18 mph.  Chance of precipitation is 50%.

    High: 80 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 60. West wind around 5 mph becoming calm  in the evening. Winds could gust as high as 17 mph.

    Low: 60 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after noon.  Partly sunny, with a high near 82. Calm wind becoming southeast around 6 mph in the afternoon. Winds could gust as high as 17 mph.

    High: 82 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, then gradually becoming mostly clear, with a low around 60. South wind around 6 mph becoming light and variable  after midnight. Winds could gust as high as 17 mph.

    Low: 60 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms, mainly after 3pm. Some of the storms could be severe. Partly sunny, with a high near 90. Southeast wind around 6 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.
Tonight
Showers and thunderstorms likely, mainly before midnight. Some of the storms could be severe. Mostly cloudy, with a low around 62. Northwest wind around 6 mph becoming calm in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 60%.
Wednesday
A slight chance of showers and thunderstorms before 9am, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 80. Calm wind becoming east around 5 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 50%.
Wednesday Night
A 50 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 60. West wind around 5 mph becoming calm in the evening. Winds could gust as high as 17 mph.
Thursday
A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 82. Calm wind becoming southeast around 6 mph in the afternoon. Winds could gust as high as 17 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 60. South wind around 6 mph becoming light and variable after midnight. Winds could gust as high as 17 mph.
Friday
Sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 66.
Saturday
Sunny, with a high near 94.
Saturday Night
Mostly clear, with a low around 68.
Sunday
Sunny, with a high near 97.
Sunday Night
Mostly clear, with a low around 71.
Monday
Sunny, with a high near 97.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Keystone SD
 43.92°N 103.41°W (Elev. 4708 ft)
10:27 am MDT Jul 7, 2026
11am MDT Jul 7, 2026-6pm MDT Jul 13, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database