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

Hazardous Coastal Conditions for the Mid-Atlantic; Storm System Approaching Southern Alaska

A Nor'easter will create hazardous marine and coastal conditions along the Mid-Atlantic coast through mid-week, with significant coastal flooding and beach erosion possible. Meanwhile, another strong storm system is forecast to bring high winds and heavy precipitation to portions of southern Alaska. Elsewhere, relatively benign weather is expected through the first half of the work week. Read More >

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Fair

47°F

8°C

Humidity 44%
Wind Speed S 3 mph
Barometer 30.26 in (1024.3 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 18 Oct 11:52 pm MDT
Extended Forecast for

4 Miles N Hermosa SD

  • Overnight

    Overnight: Mostly clear, with a low around 37. Light and variable wind.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 59. Light and variable wind becoming southeast 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 59 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 44. Southwest wind 6 to 9 mph, with gusts as high as 17 mph.

    Low: 44 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75. South wind 7 to 13 mph, with gusts as high as 24 mph.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 48. Southwest wind 7 to 10 mph becoming northwest in the evening. Winds could gust as high as 20 mph.

    Low: 48 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 66. Northwest wind 5 to 8 mph becoming southeast in the afternoon. Winds could gust as high as 16 mph.

    High: 66 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 37. Light and variable wind.
Monday
Sunny, with a high near 59. Light and variable wind becoming southeast 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.
Monday Night
Clear, with a low around 44. Southwest wind 6 to 9 mph, with gusts as high as 17 mph.
Tuesday
Sunny, with a high near 75. South wind 7 to 13 mph, with gusts as high as 24 mph.
Tuesday Night
Clear, with a low around 48. Southwest wind 7 to 10 mph becoming northwest in the evening. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 66. Northwest wind 5 to 8 mph becoming southeast in the afternoon. Winds could gust as high as 16 mph.
Wednesday Night
Mostly clear, with a low around 50.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
Mostly cloudy, with a low around 55.
Friday
A slight chance of rain after noon. Partly sunny, with a high near 73. Breezy.
Friday Night
A chance of rain. Partly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 56.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Mostly sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Hermosa SD
 43.9°N 103.19°W (Elev. 3461 ft)
Last Update:
12:31 am MDT Oct 19, 2026
Forecast Valid:
12am MDT Oct 19, 2026-6pm MDT Oct 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation