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

Rapid City, Rapid City Regional Airport (KRAP)

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

Overcast

68°F

20°C

Humidity 65%
Wind Speed Calm
Barometer 30.00 in (1014.6 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 1 Sep 12:52 pm MDT
Extended Forecast for

Hermosa SD

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 77. East wind 7 to 9 mph, with gusts as high as 18 mph.

    High: 77 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 57. Northeast wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 20 mph.

    Low: 57 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 93. Light south wind becoming southwest 12 to 17 mph in the morning. Winds could gust as high as 32 mph.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming clear, with a low around 64. Southwest wind 10 to 15 mph, with gusts as high as 29 mph.

    Low: 64 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 93. Southwest wind 8 to 14 mph, with gusts as high as 28 mph.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63. West wind 5 to 11 mph, with gusts as high as 25 mph.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

  • Friday Night

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

    Low: 66 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 77. East wind 7 to 9 mph, with gusts as high as 18 mph.
Tonight
Partly cloudy, with a low around 57. Northeast wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 93. Light south wind becoming southwest 12 to 17 mph in the morning. Winds could gust as high as 32 mph.
Wednesday Night
Mostly cloudy, then gradually becoming clear, with a low around 64. Southwest wind 10 to 15 mph, with gusts as high as 29 mph.
Thursday
Sunny, with a high near 93. Southwest wind 8 to 14 mph, with gusts as high as 28 mph.
Thursday Night
Mostly clear, with a low around 63. West wind 5 to 11 mph, with gusts as high as 25 mph.
Friday
Sunny, with a high near 96.
Friday Night
Mostly clear, with a low around 66.
Saturday
Sunny, with a high near 95.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 86.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
Labor Day
A slight chance of showers. Partly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hermosa SD
 43.82°N 103.19°W (Elev. 3383 ft)
Last Update:
12:31 pm MDT Sep 1, 2026
Forecast Valid:
1pm MDT Sep 1, 2026-6pm MDT Sep 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation