Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Custer, Custer County Airport (KCUT)

Lat: 43.73°NLon: 103.62°WElev: 5600ft.

A Few Clouds

31°F

-1°C

Humidity	61%
Wind Speed	NW 16 G 29 mph
Barometer	29.85 in (1011.8 mb)
Dewpoint	19°F (-7°C)
Visibility	10.00 mi
Wind Chill	20°F (-7°C)
Last update	9 Dec 6:53 pm MST

More Information:

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

Extended Forecast for

6 Miles NNW Keystone SD

Tonight
Low: 26 °F
Slight Chance
Snow then
Partly Cloudy
Wednesday
High: 47 °F
Chance Snow
then Chance
Rain/Snow
Wednesday Night
Low: 38 °F⇑
Chance Rain
Thursday
High: 58 °F
Slight Chance
Rain
Thursday Night
Low: 19 °F
Rain/Snow
Likely then
Snow Likely
Friday
High: 27 °F⇓
Snow Likely
Friday Night
Low: 8 °F
Chance Snow
Saturday
High: 24 °F
Chance Snow
then Mostly
Sunny
Saturday Night
Low: 9 °F
Partly Cloudy

Detailed Forecast

Tonight

A 20 percent chance of snow before 10pm. Increasing clouds, with a low around 26. Northwest wind 7 to 15 mph, with gusts as high as 43 mph.

Wednesday

A chance of snow before 2pm, then a chance of rain and snow between 2pm and 4pm, then a chance of rain after 4pm. Mostly cloudy, with a high near 47. Wind chill values as low as 20 early. Calm wind becoming southwest around 6 mph in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

Wednesday Night

A 40 percent chance of rain, mainly before 11pm. Partly cloudy, with a temperature falling to near 38 by 11pm, then rising to around 43 during the remainder of the night. West wind around 7 mph, with gusts as high as 26 mph.

Thursday

A 20 percent chance of rain after 11am. Mostly sunny, with a high near 58. West wind 7 to 10 mph, with gusts as high as 29 mph.

Thursday Night

Rain likely before 8pm, then rain and snow likely between 8pm and 10pm, then snow likely after 10pm. Mostly cloudy, with a low around 19. Northwest wind 3 to 6 mph. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Friday

Snow likely. Mostly cloudy, with a temperature rising to near 27 by 11am, then falling to around 20 during the remainder of the day. Calm wind becoming east around 5 mph. Winds could gust as high as 15 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

Friday Night

A 40 percent chance of snow. Mostly cloudy, with a low around 8. Calm wind.

Saturday

A chance of snow before 11am. Partly sunny, with a high near 24. Calm wind becoming north around 5 mph. Winds could gust as high as 17 mph.

Saturday Night

Partly cloudy, with a low around 9.

Sunday

Mostly sunny, with a high near 50.

Sunday Night

Partly cloudy, with a low around 28.

Monday

Mostly sunny, with a high near 50.