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.

Overcast

39°F

4°C

Humidity	100%
Wind Speed	Calm
Barometer	29.67 in
Dewpoint	39°F (4°C)
Visibility	10.00 mi
Last update	11 Dec 8:15 am MST

More Information:

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

Extended Forecast for

3 Miles S Whitewood SD

Today
High: 50 °F⇓
Breezy.
Mostly Cloudy
then Chance
Rain
Tonight
Low: 18 °F
Blustery.
Chance
Rain/Snow
then Slight
Chance Snow
Friday
High: 21 °F⇓
Snow
Friday Night
Low: 8 °F
Snow
Saturday
High: 17 °F
Snow Likely
then Slight
Chance Snow
Saturday Night
Low: 9 °F⇑
Partly Cloudy
Sunday
High: 49 °F
Sunny
Sunday Night
Low: 36 °F
Mostly Clear
Monday
High: 50 °F
Mostly Sunny

Detailed Forecast

Today

A 50 percent chance of rain after 1pm. Mostly cloudy, with a temperature rising to near 50 by noon, then falling to around 41 during the remainder of the day. Breezy, with a west wind 17 to 24 mph, with gusts as high as 41 mph.

Tonight

A chance of rain before 8pm, then a chance of rain and snow between 8pm and 9pm, then a chance of snow after 9pm. Cloudy, with a low around 18. Wind chill values as low as 6. Blustery, with a northwest wind 17 to 26 mph, with gusts as high as 37 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

Friday

Snow. Temperature falling to around 14 by 5pm. Wind chill values as low as 4. Northwest wind 7 to 13 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Friday Night

Snow. Low around 8. Wind chill values as low as 1. East wind 7 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

Saturday

Snow likely, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 17. North wind around 7 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

Saturday Night

Partly cloudy, with a temperature rising to around 25 by 5am. Southeast wind around 8 mph.

Sunday

Sunny, with a high near 49. Southwest wind 5 to 9 mph, with gusts as high as 16 mph.

Sunday Night

Mostly clear, with a low around 36. West wind 11 to 14 mph.

Monday

Mostly sunny, with a high near 50.

Monday Night

Partly cloudy, with a low around 38.

Tuesday

Mostly sunny, with a high near 52.