Another Arctic Blast in the East; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the upper Ohio Valley, Mid-Atlantic, Gulf Coast and Southeast U.S. this weekend. A rapidly deepening storm will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia into Sunday. Storm-force winds and coastal flooding will be possible along the East Coast. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Overcast

23°F

-5°C

Humidity	100%
Wind Speed	Calm
Barometer	30.29 in
Dewpoint	23°F (-5°C)
Visibility	10.00 mi
Last update	30 Jan 6:15 pm MST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

3 Miles WSW Lead SD

Tonight
Low: 25 °F⇑
Chance Snow
Saturday
High: 37 °F
Chance Snow
Saturday Night
Low: 28 °F
Partly Cloudy
Sunday
High: 44 °F
Mostly Sunny
Sunday Night
Low: 31 °F
Mostly Cloudy
Monday
High: 42 °F
Mostly Sunny
Monday Night
Low: 27 °F
Partly Cloudy
Tuesday
High: 36 °F
Chance Snow
Tuesday Night
Low: 24 °F
Chance Snow

Detailed Forecast

Tonight

A chance of snow before 8pm, then a chance of snow after 2am. Mostly cloudy, with a temperature falling to near 25 by 9pm, then rising to around 30 during the remainder of the night. Wind chill values as low as 18. Southwest wind around 6 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. Total nighttime snow accumulation of less than a half inch possible.

Saturday

A 50 percent chance of snow, mainly before 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 37. Northwest wind 8 to 15 mph, with gusts as high as 34 mph. New snow accumulation of less than a half inch possible.

Saturday Night

Partly cloudy, with a low around 28. Wind chill values as low as 19. West wind around 11 mph, with gusts as high as 31 mph.

Sunday

Mostly sunny, with a high near 44. Wind chill values as low as 19. West wind 5 to 9 mph becoming light in the afternoon. Winds could gust as high as 23 mph.

Sunday Night

Mostly cloudy, with a low around 31. Southwest wind around 6 mph, with gusts as high as 17 mph.

Monday

Mostly sunny, with a high near 42. Northwest wind 7 to 10 mph, with gusts as high as 29 mph.

Monday Night

Partly cloudy, with a low around 27. West wind around 10 mph, with gusts as high as 29 mph.

Tuesday

A chance of snow. Partly sunny, with a high near 36. Northwest wind around 10 mph, with gusts as high as 29 mph.

Tuesday Night

A chance of snow, mainly before 11pm. Mostly cloudy, with a low around 24.

Wednesday

Mostly sunny, with a high near 40.