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

18°C

65°F

Humidity 93%
Wind Speed N 6 km/h
Barometer 1013.6 mb (30.01 in)
Dewpoint 17°C (63°F)
Visibility 16 km
Last update 10 Aug 12:52 am MDT
Extended Forecast for

Rapid Valley SD

  • Overnight

    Overnight: Mostly clear, with a low around 16. Calm wind.

    Low: 16 °C

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 3pm. Areas of smoke after 9am. Mostly sunny, with a high near 36. Light southeast wind increasing to 16 to 21 km/h in the morning. Winds could gust as high as 39 km/h.

    High: 36 °C

    Areas Smoke
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 9pm. Areas of smoke. Partly cloudy, with a low around 17. East wind 16 to 21 km/h becoming light and variable after midnight. Winds could gust as high as 39 km/h.

    Low: 17 °C

    Slight Chance
    T-storms then
    Areas Smoke

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after noon. Areas of smoke. Mostly sunny, with a high near 34. Light and variable wind becoming east 16 to 21 km/h in the morning. Winds could gust as high as 39 km/h.

    High: 34 °C

    Areas Smoke
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 17. East wind 13 to 18 km/h becoming northwest 5 to 10 km/h in the evening. Winds could gust as high as 40 km/h.

    Low: 17 °C

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after noon. Mostly cloudy, with a high near 29. Northwest wind 5 to 10 km/h becoming east 18 to 23 km/h in the morning. Winds could gust as high as 39 km/h. Chance of precipitation is 70%.

    High: 29 °C

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely. Cloudy, with a low around 13. Chance of precipitation is 70%.

    Low: 13 °C

    T-storms
    Likely

  • Thursday

    Thursday: Showers and thunderstorms likely. Cloudy, with a high near 23.

    High: 23 °C

    T-storms
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Cloudy, with a low around 12.

    Low: 12 °C

    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 16. Calm wind.
Monday
A 20 percent chance of showers and thunderstorms after 3pm. Areas of smoke after 9am. Mostly sunny, with a high near 36. Light southeast wind increasing to 16 to 21 km/h in the morning. Winds could gust as high as 39 km/h.
Monday Night
A 20 percent chance of showers and thunderstorms before 9pm. Areas of smoke. Partly cloudy, with a low around 17. East wind 16 to 21 km/h becoming light and variable after midnight. Winds could gust as high as 39 km/h.
Tuesday
A 30 percent chance of showers and thunderstorms after noon. Areas of smoke. Mostly sunny, with a high near 34. Light and variable wind becoming east 16 to 21 km/h in the morning. Winds could gust as high as 39 km/h.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 17. East wind 13 to 18 km/h becoming northwest 5 to 10 km/h in the evening. Winds could gust as high as 40 km/h.
Wednesday
Showers and thunderstorms likely, mainly after noon. Mostly cloudy, with a high near 29. Northwest wind 5 to 10 km/h becoming east 18 to 23 km/h in the morning. Winds could gust as high as 39 km/h. Chance of precipitation is 70%.
Wednesday Night
Showers and thunderstorms likely. Cloudy, with a low around 13. Chance of precipitation is 70%.
Thursday
Showers and thunderstorms likely. Cloudy, with a high near 23.
Thursday Night
Showers and possibly a thunderstorm. Cloudy, with a low around 12.
Friday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 24.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 12.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 25.
Saturday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 13.
Sunday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 27.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rapid Valley SD
 44.06°N 103.15°W (Elev. 3107 m)
Last Update:
1:21 am MDT Aug 10, 2026
Forecast Valid:
1am MDT Aug 10, 2026-6pm MDT Aug 16, 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