National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Fair

75°F

24°C

Humidity 31%
Wind Speed NW 3 mph
Barometer 29.46 in (994.5 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 16 Jun 9:52 pm MDT
Extended Forecast for

Rapid City SD

Wind Advisory June 17, 09:00am until June 17, 08:00pm
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 61. Northwest wind 6 to 11 mph increasing to 13 to 18 mph after midnight. Winds could gust as high as 32 mph.

    Low: 61 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 76. Windy, with a northwest wind 22 to 30 mph, with gusts as high as 49 mph.

    High: 76 °F

    Sunny and
    Windy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 52. Breezy, with a northwest wind 17 to 22 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 40 mph.

    Low: 52 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 75. North wind 5 to 9 mph, with gusts as high as 25 mph.

    High: 75 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 52. North wind 5 to 7 mph becoming light and variable. Winds could gust as high as 21 mph.

    Low: 52 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 80. Northwest wind 5 to 9 mph becoming east in the afternoon. Winds could gust as high as 21 mph.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 78.

    High: 78 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Mostly cloudy, with a low around 55.

    Low: 55 °F

    Showers

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 61. Northwest wind 6 to 11 mph increasing to 13 to 18 mph after midnight. Winds could gust as high as 32 mph.
Wednesday
Sunny, with a high near 76. Windy, with a northwest wind 22 to 30 mph, with gusts as high as 49 mph.
Wednesday Night
Partly cloudy, with a low around 52. Breezy, with a northwest wind 17 to 22 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 40 mph.
Thursday
Mostly sunny, with a high near 75. North wind 5 to 9 mph, with gusts as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 52. North wind 5 to 7 mph becoming light and variable. Winds could gust as high as 21 mph.
Juneteenth
Mostly sunny, with a high near 80. Northwest wind 5 to 9 mph becoming east in the afternoon. Winds could gust as high as 21 mph.
Friday Night
Partly cloudy, with a low around 54.
Saturday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 78.
Saturday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 55.
Sunday
Showers likely, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 69.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 73.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 52.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rapid City SD
 44.08°N 103.24°W (Elev. 3291 ft)
Last Update:
10:02 pm MDT Jun 16, 2026
Forecast Valid:
10pm MDT Jun 16, 2026-6pm MDT Jun 23, 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