Severe Weather Across the Southeast; Fire Weather Concerns; Record Warmth for the West

Severe thunderstorms will continue today across portions of the Southeast as this system tracks offshore. Meanwhile, dry and breezy conditions will increase fire weather concerns for areas of central Florida today; The threat shifts into portions of the northern Plains on Friday. Record warmth will spread for the southern Plains, Southwest, central Great Basin and interior California next week. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

48°F

9°C

Humidity 32%
Wind Speed NW 7 mph
Barometer 29.86 in (1008.7 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 7 May 6:53 am MDT
Extended Forecast for

Keystone SD

  • Today

    Today: Scattered showers and thunderstorms after noon.  Partly sunny, with a high near 61. Calm wind becoming east around 6 mph. Winds could gust as high as 18 mph.  Chance of precipitation is 50%.

    High: 61 °F

    Partly Sunny
    then
    Scattered
    Showers

  • Tonight

    Tonight: A slight chance of showers and thunderstorms.  Mostly cloudy, with a low around 43. Calm wind becoming west around 6 mph after midnight. Winds could gust as high as 20 mph.  Chance of precipitation is 20%.

    Low: 43 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 68. Northwest wind 7 to 9 mph, with gusts as high as 24 mph.

    High: 68 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 49. Northwest wind around 6 mph becoming calm. Winds could gust as high as 21 mph.

    Low: 49 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers, then showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 60. North wind around 6 mph, with gusts as high as 18 mph.  Chance of precipitation is 60%.

    High: 60 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before midnight.  Mostly cloudy, with a low around 40. North wind around 5 mph becoming calm  in the evening. Winds could gust as high as 17 mph.

    Low: 40 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 68. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 16 mph.

    High: 68 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47. East wind around 5 mph becoming calm. Winds could gust as high as 15 mph.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Today
Scattered showers and thunderstorms after noon. Partly sunny, with a high near 61. Calm wind becoming east around 6 mph. Winds could gust as high as 18 mph. Chance of precipitation is 50%.
Tonight
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 43. Calm wind becoming west around 6 mph after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 68. Northwest wind 7 to 9 mph, with gusts as high as 24 mph.
Friday Night
Mostly cloudy, with a low around 49. Northwest wind around 6 mph becoming calm. Winds could gust as high as 21 mph.
Saturday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 60. North wind around 6 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.
Saturday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 40. North wind around 5 mph becoming calm in the evening. Winds could gust as high as 17 mph.
Sunday
Mostly sunny, with a high near 68. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 16 mph.
Sunday Night
Mostly clear, with a low around 47. East wind around 5 mph becoming calm. Winds could gust as high as 15 mph.
Monday
Mostly sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 50.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 48.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
Keystone SD
 43.89°N 103.43°W (Elev. 4541 ft)
6:22 am MDT May 7, 2026
7am MDT May 7, 2026-6pm MDT May 13, 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