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

Flooding Risks from Tropical Moisture Across the Intermountain West and East Coast

Tropical moisture from Isaias and Rachel will impact portions of the Intermountain West and East Coast states. Flooding, gusty winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, record warmth will spread northward across the Mississippi Valley the next few days. Looking for snow, the first winter storm of the season is underway across the northern Rockies. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

50°F

10°C

Humidity 68%
Wind Speed S 3 mph
Barometer 29.89 in (1008.0 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 11 Oct 8:53 am MDT
Extended Forecast for

Hill City SD

  • Today

    Today: Mostly cloudy, with a high near 61. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 16 mph.

    High: 61 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 40 percent chance of showers. Mostly cloudy, with a low around 45. Light and variable wind.

    Low: 45 °F

    Chance
    Showers

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 58. Calm wind becoming west 5 to 7 mph. Winds could gust as high as 20 mph.

    High: 58 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 40. Northeast wind around 6 mph becoming calm in the evening.

    Low: 40 °F

    Chance Rain

  • Tuesday

    Tuesday: A 50 percent chance of rain. Mostly cloudy, with a high near 54. Light and variable wind. Winds could gust as high as 15 mph.

    High: 54 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Chance Rain

  • Wednesday

    Wednesday: Rain likely, mainly after noon. Mostly cloudy, with a high near 50. Chance of precipitation is 60%.

    High: 50 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Rain Likely

  • Thursday

    Thursday: A chance of rain before noon. Partly sunny, with a high near 52.

    High: 52 °F

    Chance Rain
    then Mostly
    Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 61. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 16 mph.
Tonight
A 40 percent chance of showers. Mostly cloudy, with a low around 45. Light and variable wind.
Columbus Day
Mostly sunny, with a high near 58. Calm wind becoming west 5 to 7 mph. Winds could gust as high as 20 mph.
Monday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 40. Northeast wind around 6 mph becoming calm in the evening.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 54. Light and variable wind. Winds could gust as high as 15 mph.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 40. Calm wind.
Wednesday
Rain likely, mainly after noon. Mostly cloudy, with a high near 50. Chance of precipitation is 60%.
Wednesday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 39.
Thursday
A chance of rain before noon. Partly sunny, with a high near 52.
Thursday Night
Partly cloudy, with a low around 33.
Friday
Sunny, with a high near 52.
Friday Night
Mostly clear, with a low around 36.
Saturday
Sunny, with a high near 63.
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:
9:36 am MDT Oct 11, 2026
Forecast Valid:
9am MDT Oct 11, 2026-6pm MDT Oct 17, 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