Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

Lat: 44.05°NLon: 103.05°WElev: 3202ft.

Fair

66°F

19°C

Humidity 78%
Wind Speed S 8 mph
Barometer 29.97 in (1011.5 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 28 Aug 5:52 am MDT
Extended Forecast for

Rapid City SD

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 95. South wind 5 to 8 mph becoming northeast in the afternoon. Winds could gust as high as 21 mph.

    High: 95 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 65. Northeast wind around 6 mph becoming light and variable  after midnight. Winds could gust as high as 18 mph.

    Low: 65 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 93. Calm wind becoming south 5 to 8 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 93 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 63. South wind 5 to 8 mph becoming light and variable  after midnight. Winds could gust as high as 23 mph.

    Low: 63 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 91. Light and variable wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 30 mph.

    High: 91 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 59. West wind 8 to 13 mph becoming light northwest  after midnight. Winds could gust as high as 28 mph.

    Low: 59 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Tuesday

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

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 95. South wind 5 to 8 mph becoming northeast in the afternoon. Winds could gust as high as 21 mph.
Tonight
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 65. Northeast wind around 6 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 93. Calm wind becoming south 5 to 8 mph in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 63. South wind 5 to 8 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.
Sunday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 91. Light and variable wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 30 mph.
Sunday Night
Partly cloudy, with a low around 59. West wind 8 to 13 mph becoming light northwest after midnight. Winds could gust as high as 28 mph.
Monday
Sunny, with a high near 86.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Partly cloudy, with a low around 63.
Thursday
Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Rapid City SD
 44.08°N 103.24°W (Elev. 3291 ft)
3:41 am MDT Aug 28, 2026
6am MDT Aug 28, 2026-6pm MDT Sep 3, 2026
 
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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