Strong Atmospheric River Bringing Heavy Rain to the Pacific Northwest; Areas of Snow in the North-Central and Eastern U.S.

A strong atmospheric river will bring prolonged heavy rainfall along with gusty winds to the Pacific Northwest through much of this week. The heavy rainfall may lead to widespread urban and river flooding. Accumulating snow is expected over parts of the central Appalachians and Mid-Atlantic today as well as the Upper Midwest and the Upper Great Lakes this evening into Tuesday. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Mostly Cloudy and Breezy

46°F

8°C

Humidity	43%
Wind Speed	W 23 G 31 mph
Barometer	29.97 in
Dewpoint	25°F (-4°C)
Visibility	10.00 mi
Wind Chill	38°F (3°C)
Last update	8 Dec 10:35 am MST

More Information:

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

Extended Forecast for

4 Miles W Lead SD

Today
High: 38 °F⇓
Mostly Sunny
Tonight
Low: 29 °F⇑
Chance Snow
and Breezy
Tuesday
High: 37 °F⇓
Rain/Snow
Likely and
Breezy
Tuesday Night
Low: 21 °F
Chance Snow
and Blustery
Wednesday
High: 34 °F
Snow
Wednesday Night
Low: 22 °F
Snow
Thursday
High: 28 °F
Snow Likely
Thursday Night
Low: 4 °F
Snow Likely
Friday
High: 13 °F
Snow Likely

Detailed Forecast

Today

Mostly sunny, with a temperature falling to around 29 by 5pm. Wind chill values as low as 19. West wind around 14 mph, with gusts as high as 31 mph.

Tonight

A 30 percent chance of snow after 11pm. Mostly cloudy, with a temperature rising to around 32 by 4am. Wind chill values as low as 17. Breezy, with a west wind 13 to 21 mph, with gusts as high as 30 mph.

Tuesday

Rain and snow likely, becoming all snow after 2pm. Mostly cloudy, with a temperature rising to near 37 by 9am, then falling to around 27 during the remainder of the day. Wind chill values as low as 14. Breezy, with a west wind 18 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Tuesday Night

A 30 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 21. Wind chill values as low as 9. Blustery, with a northwest wind 20 to 25 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 38 mph.

Wednesday

Snow. High near 34. Southwest wind 6 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

Wednesday Night

Snow. Low around 22. West wind 13 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Thursday

Snow likely. Mostly cloudy, with a high near 28. West wind 8 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.

Thursday Night

Snow likely. Cloudy, with a low around 4. Northwest wind around 10 mph, with gusts as high as 22 mph.

Friday

Snow likely, mainly before 11am. Mostly cloudy, with a high near 13.

Friday Night

A chance of snow. Mostly cloudy, with a low around 6.

Saturday

A chance of snow. Partly sunny, with a high near 23.

Saturday Night

A slight chance of snow. Partly cloudy, with a low around 14.