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

Lake Effect Snow in the Lower Great Lakes; Unsettled Pattern in the Pacific Northwest

Lake-effect snow will continue downwind of Lakes Erie and Ontario through Friday. Lake Effect Snow Warnings have been issued. In the Western U.S., rain and higher elevation snow will continue over the Great Basin through Friday. A front will move over the Pacific Northwest this afternoon and produce light rain and higher elevation snow over the Cascades through Saturday. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

41°F

5°C

Humidity 36%
Wind Speed W 5 mph
Barometer 30.10 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 12 Feb 8:35 am MST
Extended Forecast for

4 Miles WSW Lead SD

  • Today

    Today: Sunny, with a high near 42. West wind 3 to 7 mph. Winds could gust as high as 16 mph.

    High: 42 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 27. Wind chill values as low as 20. Southwest wind around 7 mph.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 45. Wind chill values as low as 20 early. Southwest wind around 6 mph becoming light and variable.

    High: 45 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 25. Wind chill values as low as 18. West wind around 6 mph.

    Low: 25 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 43. West wind around 6 mph, with gusts as high as 15 mph.

    High: 43 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 27. Southwest wind 5 to 9 mph, with gusts as high as 16 mph.

    Low: 27 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 46. West wind 6 to 8 mph, with gusts as high as 20 mph.

    High: 46 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 28. Southwest wind around 7 mph, with gusts as high as 15 mph.

    Low: 28 °F

    Decreasing
    Clouds

  • Washington's Birthday

    Washington's Birthday: Sunny, with a high near 47.

    High: 47 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 42. West wind 3 to 7 mph. Winds could gust as high as 16 mph.
Tonight
Mostly clear, with a low around 27. Wind chill values as low as 20. Southwest wind around 7 mph.
Friday
Sunny, with a high near 45. Wind chill values as low as 20 early. Southwest wind around 6 mph becoming light and variable.
Friday Night
Mostly clear, with a low around 25. Wind chill values as low as 18. West wind around 6 mph.
Saturday
Mostly sunny, with a high near 43. West wind around 6 mph, with gusts as high as 15 mph.
Saturday Night
Mostly cloudy, with a low around 27. Southwest wind 5 to 9 mph, with gusts as high as 16 mph.
Sunday
Partly sunny, with a high near 46. West wind 6 to 8 mph, with gusts as high as 20 mph.
Sunday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 28. Southwest wind around 7 mph, with gusts as high as 15 mph.
Washington's Birthday
Sunny, with a high near 47.
Monday Night
A chance of rain and snow before 11pm, then a chance of snow. Partly cloudy, with a low around 32.
Tuesday
Snow likely. Partly sunny, with a high near 41.
Tuesday Night
A chance of snow. Partly cloudy, with a low around 23.
Wednesday
A chance of snow. Partly sunny, with a high near 35.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Lead SD
 44.33°N 103.83°W (Elev. 6398 ft)
Last Update:
6:42 am MST Feb 12, 2026
Forecast Valid:
9am MST Feb 12, 2026-6pm MST Feb 18, 2026
 
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