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

Strong to Severe Thunderstorms Continue Tonight in the East; Early Heat Wave in the West

Scattered strong to severe storms with damaging winds and potentially a tornado or two are expected tonight from the coastal Carolinas into the Mid-Atlantic states. An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Read More >

Hazardous Weather Conditions

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Overcast

45°F

7°C

Humidity 71%
Wind Speed W 10 mph
Barometer 29.71 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 17 Mar 4:15 am MDT
Extended Forecast for

2 Miles SW Lead SD

  • Overnight

    Overnight: A 40 percent chance of rain. Mostly cloudy, with a steady temperature around 37. West wind 8 to 11 mph, with gusts as high as 30 mph.

    Low: 37 °F

    Chance Rain

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly before 10am. Mostly sunny, with a high near 55. West wind 13 to 18 mph, with gusts as high as 43 mph.

    High: 55 °F

    Chance Rain
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 38. West wind 10 to 15 mph, with gusts as high as 37 mph.

    Low: 38 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 63. West wind around 10 mph, with gusts as high as 30 mph.

    High: 63 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41. West wind 7 to 9 mph, with gusts as high as 25 mph.

    Low: 41 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 65. West wind 7 to 9 mph, with gusts as high as 26 mph.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 45. West wind around 7 mph, with gusts as high as 21 mph.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 68. Northwest wind 7 to 9 mph, with gusts as high as 25 mph.

    High: 68 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

Detailed Forecast

Overnight
A 40 percent chance of rain. Mostly cloudy, with a steady temperature around 37. West wind 8 to 11 mph, with gusts as high as 30 mph.
Tuesday
A 30 percent chance of rain, mainly before 10am. Mostly sunny, with a high near 55. West wind 13 to 18 mph, with gusts as high as 43 mph.
Tuesday Night
Mostly clear, with a low around 38. West wind 10 to 15 mph, with gusts as high as 37 mph.
Wednesday
Mostly sunny, with a high near 63. West wind around 10 mph, with gusts as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 41. West wind 7 to 9 mph, with gusts as high as 25 mph.
Thursday
Mostly sunny, with a high near 65. West wind 7 to 9 mph, with gusts as high as 26 mph.
Thursday Night
Partly cloudy, with a low around 45. West wind around 7 mph, with gusts as high as 21 mph.
Friday
Sunny, with a high near 68. Northwest wind 7 to 9 mph, with gusts as high as 25 mph.
Friday Night
Mostly clear, with a low around 48.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 31.
Sunday
A slight chance of snow. Partly sunny, with a high near 46.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 30.
Monday
A chance of rain and snow. Partly sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Lead SD
 44.33°N 103.8°W (Elev. 5627 ft)
Last Update:
3:41 am MDT Mar 17, 2026
Forecast Valid:
4am MDT Mar 17, 2026-6pm MDT Mar 23, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation