Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Mostly Cloudy

39°F

4°C

Humidity	56%
Wind Speed	W 10 mph
Barometer	29.90 in
Dewpoint	25°F (-4°C)
Visibility	10.00 mi
Wind Chill	32°F (0°C)
Last update	8 Dec 8:15 pm MST

More Information:

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

Extended Forecast for

3 Miles S Whitewood SD

Tonight
Low: 40 °F⇑
Mostly Cloudy
then Mostly
Cloudy and
Breezy
Tuesday
High: 49 °F⇓
Windy. Rain
Likely then
Rain/Snow
Likely
Tuesday Night
Low: 28 °F
Partly Cloudy
and Windy
Wednesday
High: 41 °F
Snow then
Rain/Snow
Wednesday Night
Low: 41 °F
Rain and
Breezy
Thursday
High: 40 °F⇓
Rain/Snow
Likely
Thursday Night
Low: 9 °F
Snow Likely
and Blustery
Friday
High: 16 °F
Snow Likely
Friday Night
Low: 9 °F
Chance Snow

Detailed Forecast

Tonight

Mostly cloudy, with a temperature falling to near 40 by 10pm, then rising to around 46 during the remainder of the night. Breezy, with a west wind 13 to 18 mph increasing to 21 to 26 mph after midnight. Winds could gust as high as 37 mph.

Tuesday

Rain likely before 4pm, then snow likely. Increasing clouds, with a temperature rising to near 49 by 11am, then falling to around 36 during the remainder of the day. Windy, with a west wind 31 to 37 mph, with gusts as high as 50 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Tuesday Night

Partly cloudy, with a low around 28. Wind chill values as low as 16. Windy, with a northwest wind 32 to 37 mph decreasing to 21 to 26 mph after midnight. Winds could gust as high as 50 mph.

Wednesday

Snow before 2pm, then rain and snow. High near 41. Wind chill values as low as 18. West wind 8 to 13 mph becoming southeast in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Wednesday Night

Rain. Steady temperature around 41. Breezy, with a west wind 15 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 80%.

Thursday

Rain and snow likely, becoming all snow after 1pm. Cloudy, with a temperature falling to around 33 by 5pm. Northwest wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Thursday Night

Snow likely. Cloudy, with a low around 9. Blustery, with a northwest wind 17 to 20 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.

Friday

Snow likely. Cloudy, with a high near 16. Northwest wind 7 to 14 mph becoming east in the afternoon. Winds could gust as high as 21 mph.

Friday Night

A chance of snow. Mostly cloudy, with a low around 9.

Saturday

A slight chance of snow. Mostly cloudy, with a high near 22.

Saturday Night

Mostly cloudy, with a low around 15.

Sunday

Partly sunny, with a high near 39.