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

Areas of Severe Thunderstorms and Excessive Rainfall; Heat Wave Builds in the Intermountain West and Plains

A slow moving front will bring rounds of strong to severe thunderstorms and heavy rainfall to the central Plains eastward to the east-central U.S.. The first widespread significant heat wave of summer for the Intermountain West and Plains is expected to develop today and expand through next week. Dangerous heat will continue to impact portions of the Southwest and Southeast. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

58°F

14°C

Humidity 70%
Wind Speed NW 5 mph
Barometer 30.11 in (1014.0 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 10 Jul 4:53 am MDT
Extended Forecast for

8 Miles ENE Edgemont SD

Extreme Heat Watch July 11, 12:00pm until July 14, 12:00am
Click here for hazard details and duration
Extreme Heat Watch

  • Today

    Today: Sunny, with a high near 91. West wind 5 to 11 mph becoming east in the morning. Winds could gust as high as 22 mph.

    High: 91 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 67. East wind 5 to 13 mph, with gusts as high as 23 mph.

    Low: 67 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 98. Southeast wind 5 to 11 mph, with gusts as high as 23 mph.

    High: 98 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 68. Southeast wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 22 mph.

    Low: 68 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 100. Light southeast wind increasing to 12 to 17 mph in the morning. Winds could gust as high as 28 mph.

    High: 100 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 72. South wind 9 to 18 mph, with gusts as high as 33 mph.

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 102. Breezy.

    High: 102 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 72. Breezy.

    Low: 72 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 98. Breezy.

    High: 98 °F

    Mostly Sunny
    then Sunny
    and Breezy

Detailed Forecast

Today
Sunny, with a high near 91. West wind 5 to 11 mph becoming east in the morning. Winds could gust as high as 22 mph.
Tonight
Mostly clear, with a low around 67. East wind 5 to 13 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 98. Southeast wind 5 to 11 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 68. Southeast wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 22 mph.
Sunday
Sunny and hot, with a high near 100. Light southeast wind increasing to 12 to 17 mph in the morning. Winds could gust as high as 28 mph.
Sunday Night
Mostly clear, with a low around 72. South wind 9 to 18 mph, with gusts as high as 33 mph.
Monday
Sunny and hot, with a high near 102. Breezy.
Monday Night
Mostly clear, with a low around 72. Breezy.
Tuesday
Sunny, with a high near 98. Breezy.
Tuesday Night
Mostly clear, with a low around 71. Breezy.
Wednesday
Sunny, with a high near 95. Breezy.
Wednesday Night
Mostly clear, with a low around 69. Breezy.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
8 Miles ENE Edgemont SD
 43.34°N 103.68°W (Elev. 4150 ft)
Last Update:
6:18 am MDT Jul 10, 2026
Forecast Valid:
6am MDT Jul 10, 2026-6pm MDT Jul 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation