Significant and Catastrophic Flooding in the Pacific Northwest; Very Cold Temperatures in the Northern Plains

The atmospheric river over the Pacific Northwest will begin to subside today, but lingering rainfall will exacerbate ongoing catastrophic major river flooding, and landslides will continue across portions of western Washington and northwest Oregon for several days. Arctic air will plummet southward into the Northern Plains today, bringing cold air in the single digits to the region by Friday. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

39°F

4°C

Humidity	100%
Wind Speed	NE 3 mph
Barometer	29.73 in
Dewpoint	39°F (4°C)
Visibility	10.00 mi
Last update	11 Dec 10:55 am MST

More Information:

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

Extended Forecast for

North Spearfish SD

Today
High: 46 °F
Mostly Cloudy
then Chance
Rain and
Breezy
Tonight
Low: 15 °F
Chance
Rain/Snow and
Blustery then
Slight Chance
Snow
Friday
High: 25 °F
Snow
Friday Night
Low: 8 °F
Snow
Saturday
High: 21 °F
Chance Snow
then Partly
Sunny
Saturday Night
Low: 12 °F⇑
Partly Cloudy
Sunday
High: 53 °F
Sunny
Sunday Night
Low: 34 °F
Mostly Clear
Monday
High: 54 °F
Mostly Sunny

Detailed Forecast

Today

A 40 percent chance of rain after 1pm. Mostly cloudy, with a high near 46. Breezy, with a light and variable wind becoming northwest 20 to 25 mph in the afternoon. Winds could gust as high as 38 mph.

Tonight

A chance of rain before 9pm, then a chance of snow. Cloudy, with a low around 15. Blustery, with a northwest wind 16 to 21 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

Friday

Snow. High near 25. Wind chill values as low as 10. Northwest wind around 8 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Friday Night

Snow. Low around 8. East wind around 6 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

Saturday

A 50 percent chance of snow before 11am. Mostly cloudy, with a high near 21. North wind around 6 mph. New snow accumulation of less than one inch possible.

Saturday Night

Partly cloudy, with a temperature rising to around 23 by 5am. Southeast wind 3 to 7 mph.

Sunday

Sunny, with a high near 53. Southwest wind 9 to 14 mph, with gusts as high as 21 mph.

Sunday Night

Mostly clear, with a low around 34. Southwest wind 8 to 14 mph, with gusts as high as 21 mph.

Monday

Mostly sunny, with a high near 54.

Monday Night

Partly cloudy, with a low around 37.

Tuesday

Partly sunny, with a high near 55.