Heavy Rain in the Southern Appalachians; Heat Continues in the West; Monitoring Tropical Storm Erin

Heavy to excessive rain falling over the southern Appalachians may bring areas of flooding into Wednesday. Hot temperatures are in place through Wednesday across parts of the western U.S. and New England. Tropical Storm Erin is forecast to become a Hurricane by late this week as it moves westward across the central Atlantic Ocean. Monitor forecasts for any Puerto Rico or U.S. East Coast impacts. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

59°F

15°C

Humidity 78%
Wind Speed W 5 mph
Barometer 30.07 in (1011.4 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 13 Aug 4:53 am MDT
Extended Forecast for

19 Miles NW Edgemont SD

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 97. East wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 97 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 7pm.  Partly cloudy, with a low around 63. North wind 5 to 10 mph becoming east in the evening. Winds could gust as high as 15 mph.

    Low: 63 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 97. Light and variable wind becoming northwest 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

    High: 97 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 64. North wind 5 to 10 mph becoming east in the evening. Winds could gust as high as 20 mph.

    Low: 64 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 94. Northeast wind 5 to 15 mph becoming southeast in the morning. Winds could gust as high as 20 mph.

    High: 94 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 65. East wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon.  Partly sunny, with a high near 89. East wind 5 to 15 mph becoming southeast in the morning. Winds could gust as high as 20 mph.

    High: 89 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly before midnight.  Mostly cloudy, with a low around 63. East wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 97. East wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 63. North wind 5 to 10 mph becoming east in the evening. Winds could gust as high as 15 mph.
Thursday
Sunny, with a high near 97. Light and variable wind becoming northwest 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 64. North wind 5 to 10 mph becoming east in the evening. Winds could gust as high as 20 mph.
Friday
Mostly sunny, with a high near 94. Northeast wind 5 to 15 mph becoming southeast in the morning. Winds could gust as high as 20 mph.
Friday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 65. East wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 89. East wind 5 to 15 mph becoming southeast in the morning. Winds could gust as high as 20 mph.
Saturday Night
A chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 63. East wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 90.
Sunday Night
A slight chance of showers and thunderstorms before midnight. Mostly clear, with a low around 62.
Monday
Sunny, with a high near 93.
Monday Night
Mostly clear, with a low around 64.
Tuesday
Sunny, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
19 Miles NW Edgemont SD
 43.52°N 104.03°W (Elev. 3760 ft)
3:49 am MDT Aug 13, 2025
5am MDT Aug 13, 2025-6pm MDT Aug 19, 2025
 
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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