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

Excessive Rainfall and Significant Flooding in the Upper Midwest This Weekend

Heavy to excessive rainfall is expected over the weekend across eastern Iowa, northern Missouri, northwest Illinois and southern Wisconsin. Numerous flash floods, some with significant impacts, are expected in these areas. Heaviest rainfall will occur overnight Saturday and Sunday, so be sure to have multiple ways to receive warnings. Read More >

Hazardous Weather Conditions

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Fair

69°F

21°C

Humidity 45%
Wind Speed N 12 mph
Barometer 30.04 in (1015.1 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 9 Aug 8:52 pm MDT
Extended Forecast for

2 Miles SSW Rapid City SD

  • Tonight

    Tonight: Mostly clear, with a low around 55. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Areas of smoke between 10am and 5pm. Mostly sunny, with a high near 76. West wind around 5 mph becoming northeast in the afternoon. Winds could gust as high as 15 mph.

    High: 76 °F

    Areas Smoke
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 9pm. Mostly clear, with a low around 59. Calm wind becoming southwest around 5 mph in the evening.

    Low: 59 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 84. West wind 5 to 10 mph becoming north in the morning. Winds could gust as high as 15 mph.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84. Northwest wind 5 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 20 mph.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65. South wind around 10 mph, with gusts as high as 25 mph.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93. South wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 25 mph.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 55. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Areas of smoke between 10am and 5pm. Mostly sunny, with a high near 76. West wind around 5 mph becoming northeast in the afternoon. Winds could gust as high as 15 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms before 9pm. Mostly clear, with a low around 59. Calm wind becoming southwest around 5 mph in the evening.
Monday
Sunny, with a high near 84. West wind 5 to 10 mph becoming north in the morning. Winds could gust as high as 15 mph.
Monday Night
Mostly clear, with a low around 60. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday
Sunny, with a high near 84. Northwest wind 5 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 65. South wind around 10 mph, with gusts as high as 25 mph.
Wednesday
Sunny, with a high near 93. South wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 66.
Thursday
Sunny, with a high near 92.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Saturday
Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Rapid City SD
 44.03°N 103.24°W (Elev. 3599 ft)
Last Update:
7:29 pm MDT Aug 9, 2025
Forecast Valid:
9pm MDT Aug 9, 2025-6pm MDT Aug 16, 2025
 
Forecast Discussion
 
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Additional Resources

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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