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.

A Few Clouds

58°F

14°C

Humidity 90%
Wind Speed NW 3 mph
Barometer 29.92 in (1011.8 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 2 Sep 12:52 am MDT
Extended Forecast for

Hermosa SD

  • Overnight

    Overnight: Partly cloudy, with a low around 57. Light and variable wind.

    Low: 57 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 91. Light and variable wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 30 mph.

    High: 91 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 63. Southwest wind 9 to 14 mph, with gusts as high as 25 mph.

    Low: 63 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 93. Southwest wind 9 to 13 mph, with gusts as high as 26 mph.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. West wind 5 to 10 mph, with gusts as high as 24 mph.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 95. Southwest wind 5 to 15 mph becoming south in the afternoon. Winds could gust as high as 30 mph.

    High: 95 °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 96.

    High: 96 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 57. Light and variable wind.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 91. Light and variable wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 63. Southwest wind 9 to 14 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 93. Southwest wind 9 to 13 mph, with gusts as high as 26 mph.
Thursday Night
Mostly clear, with a low around 62. West wind 5 to 10 mph, with gusts as high as 24 mph.
Friday
Sunny, with a high near 95. Southwest wind 5 to 15 mph becoming south in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Mostly clear, with a low around 66.
Saturday
Sunny, with a high near 96.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Labor Day
A slight chance of showers and thunderstorms. Partly sunny, with a high near 86.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hermosa SD
 43.84°N 103.19°W (Elev. 3383 ft)
Last Update:
12:31 am MDT Sep 2, 2026
Forecast Valid:
1am MDT Sep 2, 2026-6pm MDT Sep 8, 2026
 
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