Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Fair

59°F

15°C

Humidity 72%
Wind Speed E 3 mph
Barometer 30.10 in (1016.9 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 27 Aug 5:52 am MDT
Extended Forecast for

Rapid City SD

  • Today

    Today: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 89. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 22 mph.

    High: 89 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: Mostly cloudy, with a low around 64. South wind 5 to 10 mph, with gusts as high as 22 mph.

    Low: 64 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 96. South wind 6 to 8 mph becoming north in the afternoon. Winds could gust as high as 20 mph.

    High: 96 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 66. North wind around 6 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 94. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 25 mph.

    High: 94 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 64. West wind 5 to 10 mph becoming light northwest  after midnight. Winds could gust as high as 24 mph.

    Low: 64 °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 60.

    Low: 60 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 89. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 22 mph.
Tonight
Mostly cloudy, with a low around 64. South wind 5 to 10 mph, with gusts as high as 22 mph.
Friday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 96. South wind 6 to 8 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 66. North wind around 6 mph becoming west after midnight. Winds could gust as high as 18 mph.
Saturday
Mostly sunny, with a high near 94. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 25 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 64. West wind 5 to 10 mph becoming light northwest after midnight. Winds could gust as high as 24 mph.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 86.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
Sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Rapid City SD
 44.08°N 103.21°W (Elev. 3189 ft)
3:36 am MDT Aug 27, 2026
6am MDT Aug 27, 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