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

Rapid City, Rapid City Regional Airport (KRAP)

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

Thunderstorm in Vicinity

64°F

18°C

Humidity 90%
Wind Speed SE 3 mph
Barometer 30.16 in (1019.9 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 16 Aug 6:52 pm MDT
Extended Forecast for

9 Miles SSW Union Center SD

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 59. Southeast wind 5 to 9 mph becoming northwest after midnight. Winds could gust as high as 17 mph.

    Low: 59 °F

    Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 87. Northwest wind 5 to 7 mph, with gusts as high as 18 mph.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Northeast wind around 6 mph, with gusts as high as 16 mph.

    Low: 60 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 81. North wind 6 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 18 mph.

    High: 81 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Southeast wind 7 to 10 mph, with gusts as high as 16 mph.

    Low: 57 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms before 9am, then a slight chance of showers between 9am and noon, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. South wind 6 to 11 mph becoming east in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 40%.

    High: 81 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 57.

    Low: 57 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 59. Southeast wind 5 to 9 mph becoming northwest after midnight. Winds could gust as high as 17 mph.
Monday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 87. Northwest wind 5 to 7 mph, with gusts as high as 18 mph.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Northeast wind around 6 mph, with gusts as high as 16 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 81. North wind 6 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Southeast wind 7 to 10 mph, with gusts as high as 16 mph.
Wednesday
A slight chance of showers and thunderstorms before 9am, then a slight chance of showers between 9am and noon, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. South wind 6 to 11 mph becoming east in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 40%.
Wednesday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 57.
Thursday
Sunny, with a high near 89.
Thursday Night
Mostly clear, with a low around 59.
Friday
Sunny, with a high near 89.
Friday Night
Partly cloudy, with a low around 62.
Saturday
Mostly sunny, with a high near 88. Breezy.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 64. Breezy.
Sunday
Mostly sunny, with a high near 90. Breezy.
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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:
6:16 pm MDT Aug 16, 2026
Forecast Valid:
7pm MDT Aug 16, 2026-6pm MDT Aug 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation