Major Winter Storm Ongoing in the Upper Midwest and Great Lakes; Severe Weather Along the East Coast

A major winter storm will continue to bring blizzard conditions, heavy snowfall, icing, and strong winds through today across the Upper Midwest and Upper Great Lakes. Widespread severe storms are expected across the entire eastern U.S. with the highest threat over the interior Mid-Atlantic, where there is a risk for damaging wind gusts and a few tornadoes. Heat continues to build in the West. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Overcast

10°F

-12°C

Humidity	61%
Wind Speed	Calm
Barometer	30.14 in
Dewpoint	0°F (-18°C)
Visibility	10.00 mi
Last update	16 Mar 6:15 am MDT

More Information:

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

Extended Forecast for

4 Miles SSW Lead SD

Today
High: 31 °F
Mostly Sunny
Tonight
Low: 23 °F⇑
Chance Snow
then Wintry
Mix Likely
Tuesday
High: 52 °F
Slight Chance
Rain then
Mostly Sunny
Tuesday Night
Low: 36 °F
Partly Cloudy
Wednesday
High: 61 °F
Mostly Sunny
Wednesday Night
Low: 39 °F
Partly Cloudy
Thursday
High: 65 °F
Mostly Sunny
Thursday Night
Low: 44 °F
Partly Cloudy
Friday
High: 68 °F
Sunny

Detailed Forecast

Today

Mostly sunny, with a high near 31. Wind chill values as low as -2. Calm wind becoming northwest around 6 mph. Winds could gust as high as 17 mph.

Tonight

Snow and freezing rain likely, possibly mixed with sleet before 3am, then freezing rain likely between 3am and 4am, then rain likely after 4am. Mostly cloudy, with a temperature falling to near 23 by 8pm, then rising to around 34 during the remainder of the night. Calm wind becoming west 5 to 8 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 60%. New ice accumulation of less than a 0.1 of an inch possible. New snow and sleet accumulation of less than a half inch possible.

Tuesday

A 20 percent chance of rain before noon. Mostly sunny, with a high near 52. West wind 9 to 14 mph, with gusts as high as 39 mph.

Tuesday Night

Partly cloudy, with a low around 36. West wind 6 to 11 mph, with gusts as high as 34 mph.

Wednesday

Mostly sunny, with a high near 61. West wind 6 to 10 mph, with gusts as high as 31 mph.

Wednesday Night

Partly cloudy, with a low around 39. West wind 5 to 7 mph, with gusts as high as 25 mph.

Thursday

Mostly sunny, with a high near 65. West wind 5 to 8 mph, with gusts as high as 25 mph.

Thursday Night

Partly cloudy, with a low around 44. Southwest wind around 6 mph, with gusts as high as 20 mph.