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

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

30°F

-1°C

Humidity 64%
Wind Speed N 15 G 32 mph
Barometer 29.89 in (1013.5 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 9 Dec 7:53 pm MST
Extended Forecast for

5 Miles SE Custer County Airport SD

  • Tonight

    Tonight: A 20 percent chance of snow before 10pm.  Increasing clouds, with a low around 24. Wind chill values as low as 16. Blustery, with a northwest wind 13 to 23 mph, with gusts as high as 39 mph.

    Low: 24 °F

    Slight Chance
    Snow and
    Blustery then
    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of snow after 11am, mixing with rain after 4pm.  Mostly cloudy, with a high near 41. Wind chill values as low as 16. West wind 5 to 8 mph, with gusts as high as 20 mph.  Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 41 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain, mainly before 11pm.  Partly cloudy, with a temperature rising to around 41 by 5am. West wind 13 to 15 mph, with gusts as high as 28 mph.

    Low: 34 °F

    Chance Rain

  • Thursday

    Thursday: Rain likely, mainly after 5pm.  Mostly sunny, with a high near 52. West wind around 14 mph, with gusts as high as 29 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 9pm.  Mostly cloudy, with a low around 19. Northwest wind 7 to 13 mph becoming southwest after midnight. Winds could gust as high as 24 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 19 °F

    Rain/Snow
    Likely then
    Snow Likely

  • Friday

    Friday: Snow likely, mainly before 11am.  Mostly cloudy, with a temperature rising to near 24 by noon, then falling to around 20 during the remainder of the day. Southeast wind around 6 mph, with gusts as high as 16 mph.  Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 24 °F

    Snow Likely

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly before 11pm.  Mostly cloudy, with a low around 9. East wind 6 to 8 mph becoming north after midnight. Winds could gust as high as 15 mph.

    Low: 9 °F

    Chance Snow

  • Saturday

    Saturday: A slight chance of snow before 11am.  Partly sunny, with a high near 22. North wind 5 to 7 mph becoming south in the afternoon. Winds could gust as high as 16 mph.

    High: 22 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 9.

    Low: 9 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of snow before 10pm. Increasing clouds, with a low around 24. Wind chill values as low as 16. Blustery, with a northwest wind 13 to 23 mph, with gusts as high as 39 mph.
Wednesday
A chance of snow after 11am, mixing with rain after 4pm. Mostly cloudy, with a high near 41. Wind chill values as low as 16. West wind 5 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Wednesday Night
A 30 percent chance of rain, mainly before 11pm. Partly cloudy, with a temperature rising to around 41 by 5am. West wind 13 to 15 mph, with gusts as high as 28 mph.
Thursday
Rain likely, mainly after 5pm. Mostly sunny, with a high near 52. West wind around 14 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.
Thursday Night
Rain and snow likely, becoming all snow after 9pm. Mostly cloudy, with a low around 19. Northwest wind 7 to 13 mph becoming southwest after midnight. Winds could gust as high as 24 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 temperature rising to near 24 by noon, then falling to around 20 during the remainder of the day. Southeast wind around 6 mph, with gusts as high as 16 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 low around 9. East wind 6 to 8 mph becoming north after midnight. Winds could gust as high as 15 mph.
Saturday
A slight chance of snow before 11am. Partly sunny, with a high near 22. North wind 5 to 7 mph becoming south in the afternoon. Winds could gust as high as 16 mph.
Saturday Night
Partly cloudy, with a low around 9.
Sunday
Mostly sunny, with a high near 44.
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 29.
Tuesday
Mostly sunny, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SE Custer County Airport SD
 43.67°N 103.56°W (Elev. 5623 ft)
7:07 pm MST Dec 9, 2025
8pm MST Dec 9, 2025-6pm MST Dec 16, 2025
 
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