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.

Overcast

32°F

0°C

Humidity	66%
Wind Speed	N 13 G 31 mph
Barometer	29.79 in (1009.8 mb)
Dewpoint	22°F (-6°C)
Visibility	10.00 mi
Wind Chill	22°F (-6°C)
Last update	9 Dec 5:53 pm MST

More Information:

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

Extended Forecast for

3 Miles NW Keystone SD

Tonight
Low: 25 °F
Mostly Clear
and Blustery
then Partly
Cloudy
Wednesday
High: 42 °F
Chance Snow
then Chance
Rain/Snow
Wednesday Night
Low: 37 °F⇑
Chance Rain
Thursday
High: 52 °F
Slight Chance
Rain then
Rain Likely
Thursday Night
Low: 19 °F
Rain/Snow
Likely then
Snow Likely
Friday
High: 23 °F⇓
Snow Likely
Friday Night
Low: 8 °F
Chance Snow
Saturday
High: 20 °F
Chance Snow
then Mostly
Sunny
Saturday Night
Low: 9 °F
Partly Cloudy

Detailed Forecast

Tonight

Increasing clouds, with a low around 25. Wind chill values as low as 15. Blustery, with a northwest wind 13 to 22 mph, with gusts as high as 38 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 42. Wind chill values as low as 17. Light and variable wind becoming west 5 to 8 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 rising to around 43 by 4am. West wind 10 to 13 mph, with gusts as high as 28 mph.

Thursday

Rain likely, mainly after 5pm. Mostly sunny, with a high near 52. West wind around 10 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

Thursday Night

Rain and snow likely, becoming all snow after 8pm. Mostly cloudy, with a low around 19. Northwest wind 7 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Friday

Snow likely. Cloudy, with a temperature rising to near 23 by 11am, then falling to around 18 during the remainder of the day. Northeast wind around 5 mph becoming east in the afternoon. 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. Southeast wind around 6 mph becoming northeast after midnight.

Saturday

A chance of snow before 11am. Partly sunny, with a high near 20. North wind around 5 mph becoming light and variable in the afternoon. Winds could gust as high as 17 mph.

Saturday Night

Partly cloudy, with a low around 9.

Sunday

Mostly sunny, with a high near 46.

Sunday Night

Partly cloudy, with a low around 28.

Monday

Mostly sunny, with a high near 45.

Monday Night

Partly cloudy, with a low around 30.

Tuesday

Mostly sunny, with a high near 48.