Areas of Heavy to Excessive Rainfall Which May Bring Flooding

An area of thunderstorms and heavy rains may produce flash flooding in the central and southern Plains, specifically southeast Kansas, into the morning. Monsoon moisture will continue to produce areas of heavy rainfall and the potential for flooding and debris flows across the northern Intermountain West. Heavy rain continues across portions of southwest and south-central Alaska. Read More >

Hazardous Weather Conditions

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Fair

63°F

17°C

Humidity 76%
Wind Speed NE 7 mph
Barometer 30.17 in (1019.1 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 28 Aug 12:52 am MDT
Extended Forecast for

7 Miles N New Underwood SD

  • Overnight

    Overnight: Mostly cloudy, with a low around 59. Northeast wind around 5 mph becoming north.

    Low: 59 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 82. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 82 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight.  Mostly cloudy, with a low around 59. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%.

    Low: 59 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 9am, then showers likely between 9am and noon, then showers and possibly a thunderstorm after noon.  High near 79. East wind 5 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 80%.

    High: 79 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 57. Northeast wind 5 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph.  Chance of precipitation is 70%.

    Low: 57 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers likely, with thunderstorms also possible after noon.  Partly sunny, with a high near 78. North wind around 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%.

    High: 78 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly before midnight.  Partly cloudy, with a low around 54. North wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph.

    Low: 54 °F

    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 81. West wind 5 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 81 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 59. Northeast wind around 5 mph becoming north.
Thursday
Mostly cloudy, with a high near 82. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 59. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm before 9am, then showers likely between 9am and noon, then showers and possibly a thunderstorm after noon. High near 79. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. Northeast wind 5 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 70%.
Saturday
Showers likely, with thunderstorms also possible after noon. Partly sunny, with a high near 78. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of showers, mainly before midnight. Partly cloudy, with a low around 54. North wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 81. West wind 5 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Mostly clear, with a low around 54.
Labor Day
Sunny, with a high near 85.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 86.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 54.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles N New Underwood SD
 44.2°N 102.86°W (Elev. 2799 ft)
12:09 am MDT Aug 28, 2025
1am MDT Aug 28, 2025-6pm MDT Sep 3, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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