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

55°F

13°C

Humidity 59%
Wind Speed N 16 mph
Barometer 30.08 in (1016.8 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 11 Sep 10:52 pm MDT
Extended Forecast for

Rapid Valley SD

  • Tonight

    Tonight: A 20 percent chance of showers. Partly cloudy, with a low around 47. North wind 5 to 15 mph, with gusts as high as 29 mph.

    Low: 47 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 72. Light and variable wind becoming southeast 6 to 11 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 48. Southeast wind 5 to 10 mph becoming light and variable. Winds could gust as high as 23 mph.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: Increasing clouds, with a high near 71. North wind 5 to 10 mph becoming southeast 13 to 18 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 71 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Breezy, with a southeast wind 18 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.

    Low: 55 °F

    Chance
    T-storms and
    Breezy then
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 77. Breezy, with a south wind 13 to 20 mph becoming north in the afternoon. Winds could gust as high as 36 mph.

    High: 77 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers after midnight. Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
A 20 percent chance of showers. Partly cloudy, with a low around 47. North wind 5 to 15 mph, with gusts as high as 29 mph.
Saturday
Mostly sunny, with a high near 72. Light and variable wind becoming southeast 6 to 11 mph in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
Partly cloudy, with a low around 48. Southeast wind 5 to 10 mph becoming light and variable. Winds could gust as high as 23 mph.
Sunday
Increasing clouds, with a high near 71. North wind 5 to 10 mph becoming southeast 13 to 18 mph in the afternoon. Winds could gust as high as 31 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Breezy, with a southeast wind 18 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 77. Breezy, with a south wind 13 to 20 mph becoming north in the afternoon. Winds could gust as high as 36 mph.
Monday Night
Mostly clear, with a low around 45.
Tuesday
Sunny, with a high near 71.
Tuesday Night
A slight chance of showers after midnight. Partly cloudy, with a low around 49.
Wednesday
A slight chance of showers before noon. Mostly sunny, with a high near 77.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 52.
Friday
A slight chance of showers. Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rapid Valley SD
 44.06°N 103.15°W (Elev. 3107 ft)
Last Update:
9:32 pm MDT Sep 11, 2026
Forecast Valid:
11pm MDT Sep 11, 2026-6pm MDT Sep 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation