Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Fair

84°F

29°C

Humidity 29%
Wind Speed SE 6 mph
Barometer 30.14 in (1018.4 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 26 Aug 5:52 pm MDT
Extended Forecast for

Rapid Valley SD

  • Tonight

    Tonight: Mostly clear, with a low around 59. East wind around 6 mph becoming light and variable  in the evening. Winds could gust as high as 16 mph.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 88. Light south wind becoming southeast 6 to 11 mph in the morning. Winds could gust as high as 24 mph.

    High: 88 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 64. South wind 8 to 11 mph, with gusts as high as 22 mph.

    Low: 64 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 95. South wind 9 to 13 mph becoming north in the afternoon. Winds could gust as high as 25 mph.

    High: 95 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 66. Northeast wind 5 to 8 mph becoming west after midnight. Winds could gust as high as 18 mph.

    Low: 66 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 93. West wind 5 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph.

    High: 93 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 61.

    Low: 61 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 59. East wind around 6 mph becoming light and variable in the evening. Winds could gust as high as 16 mph.
Thursday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 88. Light south wind becoming southeast 6 to 11 mph in the morning. Winds could gust as high as 24 mph.
Thursday Night
Mostly cloudy, with a low around 64. South wind 8 to 11 mph, with gusts as high as 22 mph.
Friday
Mostly sunny, with a high near 95. South wind 9 to 13 mph becoming north in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Mostly cloudy, with a low around 66. Northeast wind 5 to 8 mph becoming west after midnight. Winds could gust as high as 18 mph.
Saturday
Mostly sunny, with a high near 93. West wind 5 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 61.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
Partly cloudy, with a low around 57.
Monday
Sunny, with a high near 85.
Monday Night
Mostly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
Partly cloudy, with a low around 61.
Wednesday
Mostly sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
Rapid Valley SD
 44.08°N 103.12°W (Elev. 3268 ft)
5:31 pm MDT Aug 26, 2026
6pm MDT Aug 26, 2026-6pm MDT Sep 2, 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