Heavy Rain in the Appalachians and Central Gulf Coast; Heat Continues in the West; Monitoring the Tropics

Heavy to excessive rainfall over the southern Appalachians and portions of the central Gulf Coast may bring areas of flooding today. Hot temperatures are in place through today across much of the western U.S. and New England. Tropical Storm Erin is forecast to become a Major Hurricane this weekend as it moves across the central Atlantic Ocean. Monitor future forecasts for any East Coast impacts. Read More >

Hazardous Weather Conditions

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Fair

87°F

31°C

Humidity 32%
Wind Speed NE 8 mph
Barometer 30.04 in (1014.5 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 12 Aug 3:52 pm MDT
Extended Forecast for

9 Miles SW Owanka SD

  • Tonight

    Tonight: Partly cloudy, with a low around 64. East wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 98. South wind around 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 98 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 64. Northeast wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 15 mph.

    Low: 64 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 99. Southwest wind 5 to 10 mph becoming north 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 99 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 67. North wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 90. North wind 5 to 15 mph becoming east in the morning. Winds could gust as high as 20 mph.

    High: 90 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly before midnight.  Mostly cloudy, with a low around 66. East wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 66 °F

    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers and thunderstorms after noon.  Partly sunny, with a high near 89. East wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 89 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly before midnight.  Partly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 64. East wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 98. South wind around 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 64. Northeast wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 15 mph.
Thursday
Sunny, with a high near 99. Southwest wind 5 to 10 mph becoming north 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 67. North wind 5 to 15 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 90. North wind 5 to 15 mph becoming east in the morning. Winds could gust as high as 20 mph.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 66. East wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
A slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 89. East wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday Night
A chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 65.
Sunday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 91.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64.
Monday
Sunny, with a high near 92.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Tuesday
Sunny, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles SW Owanka SD
 43.9°N 102.69°W (Elev. 2598 ft)
3:29 pm MDT Aug 12, 2025
4pm MDT Aug 12, 2025-6pm MDT Aug 19, 2025
 
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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