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

Severe Weather Possible from the Central Plains to the Northeast; Building Heat in the West; Fire Weather Concerns for the Southwest

Severe thunderstorms will be possible from the central Plains to the Mid-Atlantic and Northeast on Monday. Hazardous heat will linger across the southern U.S. and build across the West through mid-week. Hot and dry conditions will fuel fire weather concerns for Interior Alaska and the Four Corners region through Monday. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

50°F

10°C

Humidity 89%
Wind Speed NW 8 mph
Barometer 30.12 in (1016.4 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 22 Jun 2:53 am MDT
Extended Forecast for

4 Miles NNE Keystone SD

  • Overnight

    Overnight: Areas of drizzle and fog. Cloudy, with a low around 51. Calm wind.

    Low: 51 °F

    Areas Drizzle
    and Areas Fog

  • Monday

    Monday: Showers and thunderstorms likely, mainly after 3pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 66. Calm wind becoming southeast around 6 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 60%.

    High: 66 °F

    Areas Showers
    and Patchy
    Fog then
    T-storms
    Likely

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 52. Southeast wind around 5 mph becoming calm. Winds could gust as high as 21 mph.

    Low: 52 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 68. North wind around 6 mph becoming light and variable in the afternoon. Winds could gust as high as 21 mph.

    High: 68 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 48. Light and variable wind. Winds could gust as high as 16 mph.

    Low: 48 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 66. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 70%.

    High: 66 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. Chance of precipitation is 40%.

    Low: 48 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 66.

    High: 66 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Showers
    Likely then
    Chance
    T-storms

Detailed Forecast

Overnight
Areas of drizzle and fog. Cloudy, with a low around 51. Calm wind.
Monday
Showers and thunderstorms likely, mainly after 3pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 66. Calm wind becoming southeast around 6 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 60%.
Monday Night
A 50 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 52. Southeast wind around 5 mph becoming calm. Winds could gust as high as 21 mph.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 68. North wind around 6 mph becoming light and variable in the afternoon. Winds could gust as high as 21 mph.
Tuesday Night
Partly cloudy, with a low around 48. Light and variable wind. Winds could gust as high as 16 mph.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 66. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 70%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. Chance of precipitation is 40%.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 66.
Thursday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 52.
Friday
A slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 76.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 59.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 55.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Keystone SD
 43.94°N 103.41°W (Elev. 4774 ft)
Last Update:
12:42 am MDT Jun 22, 2026
Forecast Valid:
3am MDT Jun 22, 2026-6pm MDT Jun 28, 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