Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Breezy

45°F

7°C

Humidity	87%
Wind Speed	NW 21 G 45 mph
Barometer	29.59 in
Dewpoint	41°F (5°C)
Visibility	10.00 mi
Wind Chill	37°F (3°C)
Last update	9 Dec 12:55 pm MST

More Information:

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

Extended Forecast for

4 Miles W Lead SD

This Afternoon
High: 45 °F
Rain/Snow and
Breezy
Tonight
Low: 21 °F
Mostly Cloudy
and Blustery
Wednesday
High: 38 °F
Snow Likely
then Wintry
Mix Likely
Wednesday Night
Low: 34 °F⇑
Rain Likely
then Chance
Rain/Snow
Thursday
High: 41 °F⇓
Chance
Rain/Snow
then
Rain/Snow
Thursday Night
Low: 15 °F
Snow
Friday
High: 19 °F
Snow
Friday Night
Low: 7 °F
Snow Likely
Saturday
High: 16 °F
Chance Snow

Detailed Forecast

This Afternoon

Rain before 2pm, then snow. High near 45. Wind chill values as low as 16. Breezy, with a northwest wind 22 to 24 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.

Tonight

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 45 mph.

Wednesday

Snow likely, possibly mixed with sleet before 4pm, then rain likely between 4pm and 5pm, then rain likely, possibly mixed with snow after 5pm. Mostly cloudy, with a high near 38. Wind chill values as low as 11. Southwest wind 5 to 9 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New snow and sleet accumulation of less than a half inch possible.

Wednesday Night

Rain likely before 4am, then a chance of rain and snow between 4am and 5am, then a chance of rain after 5am. Cloudy, with a temperature rising to around 38 by 2am. West wind around 16 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

Thursday

Rain, possibly mixed with snow, mainly after 5pm. Temperature rising to near 41 by 8am, then falling to around 34 during the remainder of the day. West wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Thursday Night

Snow. Low around 15. Northwest wind 10 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Friday

Snow. High near 19. Northwest wind 5 to 7 mph becoming northeast in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 90%.

Friday Night

Snow likely. Mostly cloudy, with a low around 7. South wind around 7 mph becoming northwest after midnight. Winds could gust as high as 16 mph.

Saturday

A chance of snow, mainly before 11am. Partly sunny, with a high near 16.

Saturday Night

A slight chance of snow before 11pm. Partly cloudy, with a low around 9.

Sunday

Mostly sunny, with a high near 39.

Sunday Night

Partly cloudy, with a low around 25.

Monday

Mostly sunny, with a high near 40.