National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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 >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

30°F

-1°C

Humidity 47%
Wind Speed NW 10 G 22 mph
Barometer 30.02 in (1018.4 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 10 Dec 4:53 am MST
Extended Forecast for

Custer County Airport SD

  • Today

    Today: A chance of snow after 11am, mixing with rain after 4pm. Mostly cloudy, with a high near 40. Wind chill values as low as 20. West wind 5 to 8 mph becoming southwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 50%. Total daytime snow accumulation of less than a half inch possible.

    High: 40 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow

  • Tonight

    Tonight: A 50 percent chance of rain, mainly before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a temperature rising to around 41 by 2am. West wind around 9 mph, with gusts as high as 23 mph.

    Low: 36 °F⇑

    Chance Rain
    then Slight
    Chance Rain

  • Thursday

    Thursday: Rain likely, mainly after 5pm. Mostly sunny, with a high near 52. West wind 10 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 60%.

    High: 52 °F

    Slight Chance
    Rain then
    Rain Likely

  • Thursday Night

    Thursday Night: Rain and snow likely, becoming all snow after 8pm. Mostly cloudy, with a low around 20. Northwest wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 20 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Friday

    Friday: Snow likely, mainly before 11am. Mostly cloudy, with a high near 28. South wind around 6 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 28 °F

    Snow Likely

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly before 11pm. Mostly cloudy, with a steady temperature around 22. Light and variable wind becoming northwest around 5 mph after midnight.

    Low: 22 °F

    Chance Snow

  • Saturday

    Saturday: A 20 percent chance of snow before 11am. Partly sunny, with a high near 34. Northwest wind around 7 mph becoming southwest in the afternoon. Winds could gust as high as 16 mph.

    High: 34 °F

    Slight Chance
    Snow then
    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 15. West wind 3 to 6 mph.

    Low: 15 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

Detailed Forecast

Today
A chance of snow after 11am, mixing with rain after 4pm. Mostly cloudy, with a high near 40. Wind chill values as low as 20. West wind 5 to 8 mph becoming southwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 50%. Total daytime snow accumulation of less than a half inch possible.
Tonight
A 50 percent chance of rain, mainly before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a temperature rising to around 41 by 2am. West wind around 9 mph, with gusts as high as 23 mph.
Thursday
Rain likely, mainly after 5pm. Mostly sunny, with a high near 52. West wind 10 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 60%.
Thursday Night
Rain and snow likely, becoming all snow after 8pm. Mostly cloudy, with a low around 20. Northwest wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
Snow likely, mainly before 11am. Mostly cloudy, with a high near 28. South wind around 6 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday Night
A 30 percent chance of snow, mainly before 11pm. Mostly cloudy, with a steady temperature around 22. Light and variable wind becoming northwest around 5 mph after midnight.
Saturday
A 20 percent chance of snow before 11am. Partly sunny, with a high near 34. Northwest wind around 7 mph becoming southwest in the afternoon. Winds could gust as high as 16 mph.
Saturday Night
Partly cloudy, with a low around 15. West wind 3 to 6 mph.
Sunday
Sunny, with a high near 53.
Sunday Night
Mostly clear, with a low around 29.
Monday
Sunny, with a high near 50.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Mostly sunny, with a high near 51.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Custer County Airport SD
 43.73°N 103.63°W (Elev. 5531 ft)
Last Update:
4:16 am MST Dec 10, 2025
Forecast Valid:
5am MST Dec 10, 2025-6pm MST Dec 16, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation