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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

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 Calm
Barometer 30.19 in (1015.3 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 27 Aug 10:53 pm MDT
Extended Forecast for

Hill City SD

  • Tonight

    Tonight: Mostly cloudy, with a temperature rising to around 64 by 4am. Light southwest wind. Winds could gust as high as 15 mph.

    Low: 60 °F⇑

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 88. Southwest wind 3 to 5 mph. Winds could gust as high as 18 mph.

    High: 88 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 61. Calm wind. Winds could gust as high as 15 mph.

    Low: 61 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86. Calm wind becoming southwest around 6 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 59. Southwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: 59 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 82. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 29 mph.

    High: 82 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a temperature rising to around 64 by 4am. Light southwest wind. Winds could gust as high as 15 mph.
Friday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 88. Southwest wind 3 to 5 mph. Winds could gust as high as 18 mph.
Friday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 61. Calm wind. Winds could gust as high as 15 mph.
Saturday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86. Calm wind becoming southwest around 6 mph in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 59. Southwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Sunday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 82. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 29 mph.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Sunny, with a high near 79.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Mostly sunny, with a high near 84.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hill City SD
 43.93°N 103.56°W (Elev. 5161 ft)
Last Update:
9:41 pm MDT Aug 27, 2026
Forecast Valid:
11pm MDT Aug 27, 2026-6pm MDT Sep 3, 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