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.

Fair

67°F

19°C

Humidity 76%
Wind Speed Calm
Barometer 30.03 in (1014.5 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 17 Aug 9:52 pm MDT
Extended Forecast for

Rapid City SD

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 59. Southwest wind 3 to 6 mph.

    Low: 59 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 84. North wind around 6 mph becoming calm. Winds could gust as high as 20 mph.

    High: 84 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Southeast wind around 5 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.

    Low: 58 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after noon. Mostly cloudy, then gradually becoming sunny, with a high near 87. Calm wind becoming east around 6 mph in the afternoon. Winds could gust as high as 16 mph.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. Northeast wind around 6 mph becoming southwest after midnight. Winds could gust as high as 16 mph.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 93. Light and variable wind becoming northeast 5 to 8 mph in the morning. Winds could gust as high as 20 mph.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 59. Southwest wind 3 to 6 mph.
Tuesday
A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 84. North wind around 6 mph becoming calm. Winds could gust as high as 20 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Southeast wind around 5 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after noon. Mostly cloudy, then gradually becoming sunny, with a high near 87. Calm wind becoming east around 6 mph in the afternoon. Winds could gust as high as 16 mph.
Wednesday Night
Mostly clear, with a low around 60. Northeast wind around 6 mph becoming southwest after midnight. Winds could gust as high as 16 mph.
Thursday
Sunny, with a high near 93. Light and variable wind becoming northeast 5 to 8 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 62.
Friday
Sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 62.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rapid City SD
 44.08°N 103.21°W (Elev. 3189 ft)
Last Update:
8:21 pm MDT Aug 17, 2026
Forecast Valid:
10pm MDT Aug 17, 2026-6pm MDT Aug 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation