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

Severe Thunderstorms and Heavy Rainfall from the Lower Mississippi Valley to the Mid-Atlantic; Active Pattern Continues in Hawaii

Scattered severe thunderstorms are expected today from the ArkLaTex and Lower Mississippi Valley through the Ohio Valley and Mid-Atlantic. Thunderstorms may produce heavy to excessive rain that could pose a flooding threat today from east Texas into New York. A powerful kona storm will continue to impact Hawaii through Saturday, bringing heavy rainfall, strong winds, and severe thunderstorms. Read More >

Hazardous Weather Conditions

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

30°F

-1°C

Humidity 55%
Wind Speed W 12 G 18 mph
Barometer 30.23 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 11 Mar 9:35 am MDT
Extended Forecast for

Lead SD

  • Today

    Today: Sunny, with a high near 37. Wind chill values as low as 14. West wind 7 to 10 mph, with gusts as high as 28 mph.

    High: 37 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a steady temperature around 30. Wind chill values as low as 20. Southwest wind 6 to 13 mph, with gusts as high as 29 mph.

    Low: 30 °F

    Mostly Clear

  • Thursday

    Thursday: Rain likely between noon and 5pm, then snow likely after 5pm. Mostly cloudy, with a high near 54. Breezy, with a southwest wind 14 to 21 mph, with gusts as high as 40 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 54 °F

    Partly Sunny
    then
    Rain/Snow
    Likely and
    Breezy

  • Thursday Night

    Thursday Night: Snow. Low around 26. Wind chill values as low as 18. Blustery, with a northwest wind 16 to 21 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 26 °F

    Snow and
    Blustery

  • Friday

    Friday: Snow. High near 41. West wind 5 to 7 mph, with gusts as high as 17 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 41 °F

    Snow

  • Friday Night

    Friday Night: Snow likely. Mostly cloudy, with a low around 27. Northwest wind around 6 mph becoming calm in the evening. Winds could gust as high as 15 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 27 °F

    Snow Likely

  • Saturday

    Saturday: Snow, mainly after noon. High near 42. South wind 5 to 8 mph becoming north in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%.

    High: 42 °F

    Chance Snow
    then Snow

  • Saturday Night

    Saturday Night: Snow. The snow could be heavy at times. Mostly cloudy, with a low around 12. Northwest wind 9 to 14 mph, with gusts as high as 33 mph.

    Low: 12 °F

    Heavy Snow

  • Sunday

    Sunday: Snow. Mostly cloudy, with a high near 24.

    High: 24 °F

    Snow

Detailed Forecast

Today
Sunny, with a high near 37. Wind chill values as low as 14. West wind 7 to 10 mph, with gusts as high as 28 mph.
Tonight
Mostly clear, with a steady temperature around 30. Wind chill values as low as 20. Southwest wind 6 to 13 mph, with gusts as high as 29 mph.
Thursday
Rain likely between noon and 5pm, then snow likely after 5pm. Mostly cloudy, with a high near 54. Breezy, with a southwest wind 14 to 21 mph, with gusts as high as 40 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday Night
Snow. Low around 26. Wind chill values as low as 18. Blustery, with a northwest wind 16 to 21 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Friday
Snow. High near 41. West wind 5 to 7 mph, with gusts as high as 17 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Friday Night
Snow likely. Mostly cloudy, with a low around 27. Northwest wind around 6 mph becoming calm in the evening. Winds could gust as high as 15 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Saturday
Snow, mainly after noon. High near 42. South wind 5 to 8 mph becoming north in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%.
Saturday Night
Snow. The snow could be heavy at times. Mostly cloudy, with a low around 12. Northwest wind 9 to 14 mph, with gusts as high as 33 mph.
Sunday
Snow. Mostly cloudy, with a high near 24.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 13.
Monday
A chance of snow. Mostly cloudy, with a high near 36.
Monday Night
A chance of rain and snow. Mostly cloudy, with a low around 31.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lead SD
 44.35°N 103.77°W (Elev. 5322 ft)
Last Update:
8:57 am MDT Mar 11, 2026
Forecast Valid:
9am MDT Mar 11, 2026-6pm MDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation