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

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

Lat: 44.05°NLon: 103.05°WElev: 3202ft.

Fair and Breezy

65°F

18°C

Humidity 47%
Wind Speed NW 22 G 32 mph
Barometer 29.65 in (1000.9 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 17 Jun 6:52 am MDT
Extended Forecast for

9 Miles SSW Union Center SD

Wind Advisory until June 17, 08:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until June 17, 08:00pm

    NOW until 8:00pm Wed

    Wind Advisory

  • Today

    High: 76 °F

    Mostly Sunny
    and Windy

  • Tonight

    Tonight: Mostly clear, with a low around 49. Windy, with a northwest wind 22 to 32 mph decreasing to 10 to 20 mph after midnight. Winds could gust as high as 45 mph.

    Low: 49 °F

    Mostly Clear
    and Windy
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 77. Northwest wind 13 to 17 mph, with gusts as high as 26 mph.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 50. West wind 5 to 15 mph, with gusts as high as 23 mph.

    Low: 50 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 81. Northwest wind 9 to 13 mph becoming northeast in the afternoon. Winds could gust as high as 21 mph.

    High: 81 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53. East wind 13 to 15 mph, with gusts as high as 24 mph.

    Low: 53 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 78. Breezy. Chance of precipitation is 60%.

    High: 78 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Mostly cloudy, with a low around 53. Breezy.

    Low: 53 °F

    Showers and
    Breezy

Detailed Forecast

Today
Mostly sunny, with a high near 76. Windy, with a northwest wind 36 to 39 mph, with gusts as high as 55 mph.
Tonight
Mostly clear, with a low around 49. Windy, with a northwest wind 22 to 32 mph decreasing to 10 to 20 mph after midnight. Winds could gust as high as 45 mph.
Thursday
Sunny, with a high near 77. Northwest wind 13 to 17 mph, with gusts as high as 26 mph.
Thursday Night
Partly cloudy, with a low around 50. West wind 5 to 15 mph, with gusts as high as 23 mph.
Juneteenth
Mostly sunny, with a high near 81. Northwest wind 9 to 13 mph becoming northeast in the afternoon. Winds could gust as high as 21 mph.
Friday Night
Partly cloudy, with a low around 53. East wind 13 to 15 mph, with gusts as high as 24 mph.
Saturday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 78. Breezy. Chance of precipitation is 60%.
Saturday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 53. Breezy.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 69. Breezy.
Sunday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 50. Breezy.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 73.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 50.
Tuesday
Mostly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles SSW Union Center SD
 44.44°N 102.73°W (Elev. 2546 ft)
Last Update:
5:33 am MDT Jun 17, 2026
Forecast Valid:
7am MDT Jun 17, 2026-6pm MDT Jun 23, 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