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

Tropical Moisture Brings Slight Risk of Excessive Rainfall to the Southwest; Strong to Locally Severe Storms on the Plains

Heavy rain and flash flooding are possible across portions of the Southwest through Friday, where Flood Watches are in effect. Strong to locally severe thunderstorms are possible today across portions of the Plains. A tropical wave is causing heavy rainfall in Puerto Rico and the Virgin Islands, which may cause urban and small stream flooding and landslides today. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Mostly Cloudy

56°F

13°C

Humidity 72%
Wind Speed Vrbl 3 mph
Barometer 30.15 in (1017.3 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 18 Sep 2:53 pm MDT
Extended Forecast for

Hot Springs SD

  • This Afternoon

    This Afternoon: A 20 percent chance of showers before 5pm. Partly sunny, with a high near 65. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 65 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms. Areas of fog after midnight. Otherwise, increasing clouds, with a low around 48. Northeast wind 5 to 10 mph becoming light in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

    Low: 48 °F

    Chance
    Showers and
    Areas Fog

  • Friday

    Friday: Areas of fog before 9am. Otherwise, mostly sunny, with a high near 75. Calm wind becoming southeast around 5 mph in the afternoon. Winds could gust as high as 15 mph.

    High: 75 °F

    Areas Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 51. East wind around 5 mph becoming calm in the evening. Winds could gust as high as 15 mph.

    Low: 51 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 80. Light and variable wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 15 mph.

    High: 80 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 53. Southeast wind around 5 mph becoming calm in the evening.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 86. Northwest wind 5 to 10 mph becoming southwest in the morning. Winds could gust as high as 20 mph.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. North wind around 5 mph becoming northwest after midnight. Winds could gust as high as 15 mph.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 74.

    High: 74 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

This Afternoon
A 20 percent chance of showers before 5pm. Partly sunny, with a high near 65. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
A chance of showers and thunderstorms. Areas of fog after midnight. Otherwise, increasing clouds, with a low around 48. Northeast wind 5 to 10 mph becoming light in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Friday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 75. Calm wind becoming southeast around 5 mph in the afternoon. Winds could gust as high as 15 mph.
Friday Night
Partly cloudy, with a low around 51. East wind around 5 mph becoming calm in the evening. Winds could gust as high as 15 mph.
Saturday
Mostly sunny, with a high near 80. Light and variable wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 15 mph.
Saturday Night
Mostly clear, with a low around 53. Southeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 86. Northwest wind 5 to 10 mph becoming southwest in the morning. Winds could gust as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 56. North wind around 5 mph becoming northwest after midnight. Winds could gust as high as 15 mph.
Monday
A chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 51.
Thursday
Sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hot Springs SD
 43.44°N 103.48°W (Elev. 3599 ft)
Last Update:
3:17 pm MDT Sep 18, 2025
Forecast Valid:
3pm MDT Sep 18, 2025-6pm MDT Sep 25, 2025
 
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