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

Spearfish / Clyde Ice (KSPF)

Lat: 44.48°NLon: 103.78°WElev: 3898ft.

Fair

46°F

8°C

Humidity 46%
Wind Speed E 8 mph
Barometer 30.23 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 18 Oct 6:55 pm MDT
Extended Forecast for

Belle Fourche SD

  • Tonight

    Tonight: Mostly clear, with a low around 36. East wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 64. Breezy, with an east wind 9 to 14 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 38 mph.

    High: 64 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 39. East wind 13 to 18 mph becoming light and variable  after midnight. Winds could gust as high as 34 mph.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73. Calm wind becoming northeast around 6 mph.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 41. Light and variable wind becoming west 5 to 8 mph in the evening.

    Low: 41 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 66. Light and variable wind becoming east 8 to 13 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 66 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of rain after midnight.  Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy
    then Slight
    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 36. East wind 8 to 11 mph, with gusts as high as 21 mph.
Monday
Sunny, with a high near 64. Breezy, with an east wind 9 to 14 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 38 mph.
Monday Night
Mostly clear, with a low around 39. East wind 13 to 18 mph becoming light and variable after midnight. Winds could gust as high as 34 mph.
Tuesday
Sunny, with a high near 73. Calm wind becoming northeast around 6 mph.
Tuesday Night
Mostly clear, with a low around 41. Light and variable wind becoming west 5 to 8 mph in the evening.
Wednesday
Sunny, with a high near 66. Light and variable wind becoming east 8 to 13 mph in the afternoon. Winds could gust as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Mostly sunny, with a high near 80.
Thursday Night
A slight chance of rain after midnight. Partly cloudy, with a low around 55.
Friday
A slight chance of rain. Partly sunny, with a high near 74. Breezy.
Friday Night
A chance of rain. Mostly cloudy, with a low around 42. Breezy.
Saturday
A slight chance of rain. Mostly sunny, with a high near 54. Breezy.
Saturday Night
Partly cloudy, with a low around 36.
Sunday
Sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
Belle Fourche SD
 44.67°N 103.86°W (Elev. 3025 ft)
5:36 pm MDT Oct 18, 2026
7pm MDT Oct 18, 2026-6pm MDT Oct 25, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database