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

39°F

4°C

Humidity 42%
Wind Speed SW 7 mph
Barometer 30.05 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 12 Feb 5:15 pm MST
Extended Forecast for

3 Miles WSW Lead SD

  • Tonight

    Tonight: Mostly clear, with a low around 28. Southwest wind 5 to 7 mph, with gusts as high as 15 mph.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 45. Southwest wind around 6 mph becoming light and variable in the afternoon.

    High: 45 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 27. Wind chill values as low as 20. South wind around 6 mph becoming west after midnight.

    Low: 27 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 45. Wind chill values as low as 20 early. Northwest wind 3 to 6 mph. Winds could gust as high as 15 mph.

    High: 45 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 30. Southwest wind 5 to 9 mph, with gusts as high as 18 mph.

    Low: 30 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 48. West wind 6 to 8 mph, with gusts as high as 20 mph.

    High: 48 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 30. Southwest wind around 7 mph, with gusts as high as 16 mph.

    Low: 30 °F

    Decreasing
    Clouds

  • Washington's Birthday

    Washington's Birthday: Sunny, with a high near 49. Southwest wind 8 to 10 mph, with gusts as high as 23 mph.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: A slight chance of rain and snow before 11pm. Partly cloudy, with a low around 34.

    Low: 34 °F

    Slight Chance
    Rain/Snow
    then Partly
    Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 28. Southwest wind 5 to 7 mph, with gusts as high as 15 mph.
Friday
Increasing clouds, with a high near 45. Southwest wind around 6 mph becoming light and variable in the afternoon.
Friday Night
Mostly clear, with a low around 27. Wind chill values as low as 20. South wind around 6 mph becoming west after midnight.
Saturday
Mostly sunny, with a high near 45. Wind chill values as low as 20 early. Northwest wind 3 to 6 mph. Winds could gust as high as 15 mph.
Saturday Night
Partly cloudy, with a low around 30. Southwest wind 5 to 9 mph, with gusts as high as 18 mph.
Sunday
Partly sunny, with a high near 48. 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 30. Southwest wind around 7 mph, with gusts as high as 16 mph.
Washington's Birthday
Sunny, with a high near 49. Southwest wind 8 to 10 mph, with gusts as high as 23 mph.
Monday Night
A slight chance of rain and snow before 11pm. Partly cloudy, with a low around 34.
Tuesday
Snow likely, mainly after 11am. Partly sunny, with a high near 45.
Tuesday Night
Snow likely. Partly cloudy, with a low around 23.
Wednesday
A chance of snow. Partly sunny, with a high near 35.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 19.
Thursday
A chance of snow. Mostly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Lead SD
 44.35°N 103.83°W (Elev. 6112 ft)
Last Update:
3:52 pm MST Feb 12, 2026
Forecast Valid:
5pm MST Feb 12, 2026-6pm MST Feb 19, 2026
 
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