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Heavy Rain in the Southern Appalachians; Fire Weather and Heat in the West; Monitoring Tropical Storm Erin

Heavy to excessive rainfall over the southern Appalachians may bring areas of flooding today. Gusty winds and low relative humidity will bring critical fire weather conditions to parts of the Great Basin and northern Rockies today and Thursday. Hot to extremely hot temperatures are in place through today across parts of the western U.S. Read More >

Hazardous Weather Conditions

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Fair

71°F

22°C

Humidity 61%
Wind Speed S 10 mph
Barometer 29.89 in (1008.9 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 13 Aug 6:52 am MDT
Extended Forecast for

4 Miles SW Blackhawk SD

  • Today

    Today: A slight chance of showers and thunderstorms before 8am, then a slight chance of showers and thunderstorms after 3pm. Some of the storms could be severe. Mostly sunny, with a high near 89. Southwest wind around 5 mph becoming northeast in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 20%.

    High: 89 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 7pm. Some of the storms could be severe. Partly cloudy, with a low around 63. North wind around 5 mph becoming southwest in the evening.

    Low: 63 °F

    Severe
    Thunderstorms
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 92. West wind 5 to 10 mph becoming east in the morning. Winds could gust as high as 20 mph.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 62. North wind around 5 mph becoming west after midnight. Winds could gust as high as 15 mph.

    Low: 62 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 84. Northwest wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63. East wind around 5 mph becoming west after midnight. Winds could gust as high as 15 mph.

    Low: 63 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 80. West wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph.

    High: 80 °F

    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. East wind around 5 mph becoming west after midnight. Winds could gust as high as 20 mph.

    Low: 61 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 82.

    High: 82 °F

    Chance
    T-storms

Detailed Forecast

Today
A slight chance of showers and thunderstorms before 8am, then a slight chance of showers and thunderstorms after 3pm. Some of the storms could be severe. Mostly sunny, with a high near 89. Southwest wind around 5 mph becoming northeast in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 20%.
Tonight
A 20 percent chance of showers and thunderstorms before 7pm. Some of the storms could be severe. Partly cloudy, with a low around 63. North wind around 5 mph becoming southwest in the evening.
Thursday
Sunny, with a high near 92. West wind 5 to 10 mph becoming east in the morning. Winds could gust as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 62. North wind around 5 mph becoming west after midnight. Winds could gust as high as 15 mph.
Friday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 84. Northwest wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63. East wind around 5 mph becoming west after midnight. Winds could gust as high as 15 mph.
Saturday
A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 80. West wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. East wind around 5 mph becoming west after midnight. Winds could gust as high as 20 mph.
Sunday
A chance of showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 82.
Sunday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 61.
Monday
A slight chance of showers and thunderstorms. Sunny, with a high near 85.
Monday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 62.
Tuesday
A slight chance of showers and thunderstorms. Sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Blackhawk SD
 44.09°N 103.36°W (Elev. 4108 ft)
Last Update:
6:49 am MDT Aug 13, 2025
Forecast Valid:
7am MDT Aug 13, 2025-6pm MDT Aug 19, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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