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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

A Few Clouds

71°F

22°C

Humidity 66%
Wind Speed E 13 G 20 mph
Barometer 30.16 in (1015.2 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 18 Sep 2:53 pm MDT
Extended Forecast for

Hill City SD

  • This Afternoon

    This Afternoon: A slight chance of showers, with thunderstorms also possible after 4pm. Mostly sunny, with a steady temperature around 72. Northeast wind around 6 mph becoming calm. Winds could gust as high as 16 mph. Chance of precipitation is 20%.

    High: 72 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms between 8pm and 3am, then showers likely and possibly a thunderstorm after 3am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 54. Calm wind. Chance of precipitation is 70%.

    Low: 54 °F

    Chance
    T-storms then
    Showers
    Likely and
    Patchy Fog

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Patchy fog before 9am. Otherwise, cloudy, with a high near 63. Light and variable wind. Winds could gust as high as 17 mph. Chance of precipitation is 70%.

    High: 63 °F

    Showers
    Likely and
    Patchy Fog

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 51. Light and variable wind. Winds could gust as high as 16 mph. Chance of precipitation is 70%.

    Low: 51 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 55. Light and variable wind. Winds could gust as high as 17 mph. Chance of precipitation is 100%.

    High: 55 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 48. Calm wind. Winds could gust as high as 15 mph. Chance of precipitation is 100%.

    Low: 48 °F

    Showers then
    Showers
    Likely

  • Monday

    Monday: Showers likely. Mostly cloudy, with a high near 58. Chance of precipitation is 70%.

    High: 58 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers before midnight. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance
    Showers then
    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers after noon. Mostly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny
    then Slight
    Chance
    Showers

Detailed Forecast

This Afternoon
A slight chance of showers, with thunderstorms also possible after 4pm. Mostly sunny, with a steady temperature around 72. Northeast wind around 6 mph becoming calm. Winds could gust as high as 16 mph. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms between 8pm and 3am, then showers likely and possibly a thunderstorm after 3am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 54. Calm wind. Chance of precipitation is 70%.
Saturday
Showers likely and possibly a thunderstorm before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Patchy fog before 9am. Otherwise, cloudy, with a high near 63. Light and variable wind. Winds could gust as high as 17 mph. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 51. Light and variable wind. Winds could gust as high as 16 mph. Chance of precipitation is 70%.
Sunday
Showers and possibly a thunderstorm. High near 55. Light and variable wind. Winds could gust as high as 17 mph. Chance of precipitation is 100%.
Sunday Night
Showers and possibly a thunderstorm. Low around 48. Calm wind. Winds could gust as high as 15 mph. Chance of precipitation is 100%.
Monday
Showers likely. Mostly cloudy, with a high near 58. Chance of precipitation is 70%.
Monday Night
A chance of showers before midnight. Mostly cloudy, with a low around 48.
Tuesday
A slight chance of showers after noon. Mostly sunny, with a high near 69.
Tuesday Night
A chance of showers before midnight. Partly cloudy, with a low around 53.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 73.
Wednesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 75.
Thursday Night
Partly cloudy, with a low around 53.
Friday
Mostly sunny, with a high near 75.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hill City SD
 43.93°N 103.56°W (Elev. 5161 ft)
Last Update:
2:41 pm MDT Sep 18, 2026
Forecast Valid:
3pm MDT Sep 18, 2026-6pm MDT Sep 25, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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