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

89°F

32°C

Humidity 35%
Wind Speed NE 13 mph
Barometer 30.12 in (1016.7 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 21 Aug 3:52 pm MDT
Extended Forecast for

Rapid City SD

  • Tonight

    Tonight: Partly cloudy, with a low around 61. East wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 20 mph.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 87. Light and variable wind becoming southeast 8 to 13 mph in the morning. Winds could gust as high as 26 mph.

    High: 87 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Cloudy, then gradually becoming partly cloudy, with a low around 64. Southeast wind 5 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    Low: 64 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 93. Southeast wind 6 to 9 mph becoming northeast in the afternoon. Winds could gust as high as 21 mph.

    High: 93 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 67. Northeast wind 5 to 7 mph becoming west after midnight. Winds could gust as high as 18 mph.

    Low: 67 °F

    Chance
    Showers then
    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 93. West wind 5 to 9 mph becoming northeast in the afternoon. Winds could gust as high as 22 mph.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers after midnight. Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 87.

    High: 87 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 61. East wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Saturday
Mostly sunny, with a high near 87. Light and variable wind becoming southeast 8 to 13 mph in the morning. Winds could gust as high as 26 mph.
Saturday Night
A chance of showers and thunderstorms. Cloudy, then gradually becoming partly cloudy, with a low around 64. Southeast wind 5 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Sunday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 93. Southeast wind 6 to 9 mph becoming northeast in the afternoon. Winds could gust as high as 21 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 67. Northeast wind 5 to 7 mph becoming west after midnight. Winds could gust as high as 18 mph.
Monday
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 93. West wind 5 to 9 mph becoming northeast in the afternoon. Winds could gust as high as 22 mph.
Monday Night
A 30 percent chance of showers after midnight. Partly cloudy, with a low around 63.
Tuesday
A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 87.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 87.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Rapid City SD
 44.08°N 103.24°W (Elev. 3291 ft)
Last Update:
4:06 pm MDT Aug 21, 2026
Forecast Valid:
4pm MDT Aug 21, 2026-6pm MDT Aug 28, 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