Prolonged Extreme Cold; Eastern U.S. Winter Storm

Another Arctic blast will surge south across the northern Plains Thursday night, crossing the Midwest and reaching the Gulf Coast Friday night. Confidence continues to increase for significant heavy snow across much of the Southern Appalachians, Carolinas, and southern Mid-Atlantic Friday into Sunday. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Overcast

27°F

-3°C

Humidity 74%
Wind Speed W 5 mph
Barometer 30.08 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 28 Jan 8:15 pm MST
Extended Forecast for

4 Miles WSW Lead SD

Winter Weather Advisory January 29, 05:00am until January 30, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory
  • Tonight

    Tonight: Snow likely, mainly after 11pm.  Cloudy, with a low around 20. Wind chill values as low as 8. West wind 5 to 14 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%. Total nighttime snow accumulation of less than one inch possible.

    Low: 20 °F

    Snow Likely

  • Thursday

    Thursday: Snow.  High near 26. Wind chill values as low as 7. Northwest wind 11 to 16 mph, with gusts as high as 23 mph.  Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 26 °F

    Snow

  • Thursday Night

    Thursday Night: Snow.  Low around 16. Northwest wind 7 to 10 mph, with gusts as high as 21 mph.  Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 16 °F

    Snow

  • Friday

    Friday: Snow.  Steady temperature around 19. Wind chill values as low as 8. Northwest wind around 6 mph becoming southeast in the afternoon. Winds could gust as high as 16 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 19 °F

    Snow then
    Snow Likely

  • Friday Night

    Friday Night: A 30 percent chance of snow.  Mostly cloudy, with a temperature rising to around 22 by 5am. Southwest wind 6 to 9 mph, with gusts as high as 17 mph.

    Low: 16 °F

    Chance Snow

  • Saturday

    Saturday: A 50 percent chance of snow.  Mostly cloudy, with a high near 35. West wind 10 to 14 mph, with gusts as high as 29 mph.  New snow accumulation of less than one inch possible.

    High: 35 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 22. West wind around 16 mph, with gusts as high as 30 mph.

    Low: 22 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 36. West wind 6 to 13 mph, with gusts as high as 23 mph.

    High: 36 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Snow likely, mainly after 11pm. Cloudy, with a low around 20. Wind chill values as low as 8. West wind 5 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than one inch possible.
Thursday
Snow. High near 26. Wind chill values as low as 7. Northwest wind 11 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Thursday Night
Snow. Low around 16. Northwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Friday
Snow. Steady temperature around 19. Wind chill values as low as 8. Northwest wind around 6 mph becoming southeast in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a temperature rising to around 22 by 5am. Southwest wind 6 to 9 mph, with gusts as high as 17 mph.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a high near 35. West wind 10 to 14 mph, with gusts as high as 29 mph. New snow accumulation of less than one inch possible.
Saturday Night
Partly cloudy, with a low around 22. West wind around 16 mph, with gusts as high as 30 mph.
Sunday
Mostly sunny, with a high near 36. West wind 6 to 13 mph, with gusts as high as 23 mph.
Sunday Night
Mostly cloudy, with a low around 24.
Monday
Partly sunny, with a high near 40.
Monday Night
A slight chance of snow. Mostly cloudy, with a low around 22.
Tuesday
A chance of snow. Mostly cloudy, with a high near 29.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 19.
Wednesday
A slight chance of snow. Mostly sunny, with a high near 31.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Lead SD
 44.33°N 103.83°W (Elev. 6398 ft)
7:02 pm MST Jan 28, 2026
8pm MST Jan 28, 2026-6pm MST Feb 4, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database