Prolonged Extreme Cold; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the Gulf Coast, upper Ohio Valley, Mid-Atlantic, and Southeast U.S. into this weekend. A rapidly deepening storm centered just off the North Carolina coast Friday night through Saturday night will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia. Read More >

Hazardous Weather Conditions

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Overcast

32°F

0°C

Humidity	80%
Wind Speed	NW 7 mph
Barometer	30.21 in
Dewpoint	27°F (-3°C)
Visibility	10.00 mi
Wind Chill	25°F (-4°C)
Last update	29 Jan 7:35 pm MST

More Information:

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

Extended Forecast for

Lead SD

Winter Weather Advisory January 29, 07:40pm until January 30, 05:00pm

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory January 29, 07:40pm until January 30, 05:00pm
NOW until 5:00pm Fri
Winter Weather Advisory
Tonight
Low: 22 °F
Snow Likely
and Patchy
Fog
Friday
High: 30 °F
Snow Likely
and Patchy
Fog then
Chance Snow
Friday Night
Low: 25 °F⇑
Chance Snow
Saturday
High: 41 °F
Rain/Snow
Likely then
Slight Chance
Rain/Snow
Saturday Night
Low: 30 °F
Mostly Clear
Sunday
High: 42 °F
Mostly Sunny
Sunday Night
Low: 28 °F
Mostly Cloudy
Monday
High: 43 °F
Partly Sunny

Detailed Forecast

Tonight

Snow likely, mainly after 5am. Patchy fog. Otherwise, mostly cloudy, with a low around 22. Light and variable wind. Winds could gust as high as 18 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of around an inch possible.

Friday

Snow likely, mainly before 8am. Patchy fog before 8am. Otherwise, cloudy, with a high near 30. Wind chill values as low as 19. Calm wind becoming north around 5 mph. Winds could gust as high as 15 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

Friday Night

A 40 percent chance of snow after 11pm. Mostly cloudy, with a temperature rising to around 32 by 5am. Calm wind becoming southwest around 5 mph after midnight. Winds could gust as high as 16 mph. New snow accumulation of less than a half inch possible.

Saturday

Snow likely before 9am, then rain and snow likely between 9am and 2pm, then a slight chance of snow after 2pm. Partly sunny, with a high near 41. West wind 6 to 10 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Saturday Night

Mostly clear, with a low around 30. West wind around 10 mph, with gusts as high as 30 mph.

Sunday

Mostly sunny, with a high near 42. West wind 3 to 8 mph. Winds could gust as high as 23 mph.

Sunday Night

Mostly cloudy, with a low around 28. Light southwest wind.

Monday

Partly sunny, with a high near 43. Northwest wind 5 to 8 mph, with gusts as high as 23 mph.

Monday Night

A slight chance of snow. Partly cloudy, with a low around 28.

Tuesday

A chance of snow. Partly sunny, with a high near 36.