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

69°F

21°C

Humidity 70%
Wind Speed NW 14 mph
Barometer 30.10 in (1016.5 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 14 Aug 11:52 pm MDT
Extended Forecast for

Rapid City SD

  • Overnight

    Overnight: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Northwest wind around 7 mph, with gusts as high as 17 mph. Chance of precipitation is 20%.

    Low: 60 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 77. North wind 6 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 50%.

    High: 77 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 57. Southwest wind around 6 mph becoming calm in the evening. Winds could gust as high as 16 mph.

    Low: 57 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 82. Light and variable wind becoming southeast 6 to 11 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 60%.

    High: 82 °F

    Mostly Sunny
    then Showers
    Likely

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 58. East wind 5 to 7 mph becoming west after midnight. Winds could gust as high as 20 mph.

    Low: 58 °F

    Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86. Calm wind becoming east 5 to 7 mph in the afternoon. Winds could gust as high as 17 mph.

    High: 86 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 83.

    High: 83 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 57.

    Low: 57 °F

    Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Overnight
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Northwest wind around 7 mph, with gusts as high as 17 mph. Chance of precipitation is 20%.
Saturday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 77. North wind 6 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 50%.
Saturday Night
A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 57. Southwest wind around 6 mph becoming calm in the evening. Winds could gust as high as 16 mph.
Sunday
Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 82. Light and variable wind becoming southeast 6 to 11 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 60%.
Sunday Night
A 40 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 58. East wind 5 to 7 mph becoming west after midnight. Winds could gust as high as 20 mph.
Monday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86. Calm wind becoming east 5 to 7 mph in the afternoon. Winds could gust as high as 17 mph.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 60.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 83.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 79.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 56.
Thursday
Sunny, with a high near 82.
Thursday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 58.
Friday
Sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Rapid City SD
 44.08°N 103.21°W (Elev. 3189 ft)
Last Update:
11:16 pm MDT Aug 14, 2026
Forecast Valid:
12am MDT Aug 15, 2026-6pm MDT Aug 21, 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