Severe Thunderstorm and Heavy Rainfall Threat Tonight; Heat Continues on Tuesday Across the Eastern U.S.

Severe weather and flash flooding threats continue across the Central Plains and Midwest into tonight. Very large hail, strong tornadoes and damaging winds are expected. An early season heat wave will continue to challenge temperature records across the eastern U.S. through Wednesday. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Overcast

34°F

1°C

Humidity 73%
Wind Speed Vrbl 3 mph
Barometer 30.07 in (1019.8 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 18 May 8:53 pm MDT
Extended Forecast for

8 Miles NW Edgemont SD

Freeze Warning May 19, 12:00am until May 19, 09:00am
Click here for hazard details and duration
Freeze Warning
  • Tonight

    Tonight: A 30 percent chance of showers before 11pm.  Widespread frost after 2am.  Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 30. Northwest wind 6 to 13 mph, with gusts as high as 21 mph.

    Low: 30 °F

    Chance
    Showers then
    Frost

  • Tuesday

    Tuesday: Widespread frost before 8am.  Otherwise, sunny, with a high near 60. Northwest wind 6 to 9 mph, with gusts as high as 21 mph.

    High: 60 °F

    Frost then
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 34. West wind around 6 mph becoming light and variable  after midnight. Winds could gust as high as 15 mph.

    Low: 34 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers before noon.  Mostly sunny, with a high near 68. Light and variable wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 17 mph.

    High: 68 °F

    Slight Chance
    Showers then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 39. South wind 8 to 13 mph becoming light and variable  after midnight. Winds could gust as high as 20 mph.

    Low: 39 °F

    Mostly Clear

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 69. Light and variable wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 23 mph.

    High: 69 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 40. Chance of precipitation is 60%.

    Low: 40 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after noon.  Partly sunny, with a high near 66.

    High: 66 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 40.

    Low: 40 °F

    Slight Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers before 11pm. Widespread frost after 2am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 30. Northwest wind 6 to 13 mph, with gusts as high as 21 mph.
Tuesday
Widespread frost before 8am. Otherwise, sunny, with a high near 60. Northwest wind 6 to 9 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 34. West wind around 6 mph becoming light and variable after midnight. Winds could gust as high as 15 mph.
Wednesday
A 20 percent chance of showers before noon. Mostly sunny, with a high near 68. Light and variable wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 17 mph.
Wednesday Night
Mostly clear, with a low around 39. South wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Thursday
A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 69. Light and variable wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 23 mph.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Friday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 66.
Friday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 44.
Sunday
Sunny, with a high near 86.
Sunday Night
Mostly clear, with a low around 48.
Memorial Day
Sunny, with a high near 89.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles NW Edgemont SD
 43.4°N 103.93°W (Elev. 3599 ft)
8:49 pm MDT May 18, 2026
9pm MDT May 18, 2026-6pm MDT May 25, 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