Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

31°F

-1°C

Humidity 64%
Wind Speed SW 7 mph
Barometer 29.88 in (1012.9 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 8 Dec 9:53 pm MST
Extended Forecast for

3 Miles NNE Custer State Park SD

  • Tonight

    Tonight: A 10 percent chance of snow after 5am.  Mostly cloudy, with a temperature rising to around 42 by 4am. West wind 9 to 18 mph, with gusts as high as 31 mph.

    Low: 36 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: A 40 percent chance of rain, mainly after 11am.  Mostly sunny, with a high near 52. Breezy, with a west wind 21 to 29 mph, with gusts as high as 45 mph.

    High: 52 °F

    Chance Rain
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 28. Wind chill values as low as 19. Blustery, with a northwest wind 21 to 26 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 46 mph.

    Low: 28 °F

    Partly Cloudy
    and Blustery

  • Wednesday

    Wednesday: Snow likely before 2pm, then rain and snow likely between 2pm and 3pm, then rain likely after 3pm.  Mostly cloudy, with a high near 44. South wind 7 to 13 mph, with gusts as high as 21 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 44 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain.  Mostly cloudy, with a low around 33. Northwest wind 10 to 13 mph, with gusts as high as 26 mph.

    Low: 33 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain before 4pm, then rain likely, possibly mixed with snow.  Mostly cloudy, with a high near 44. West wind around 10 mph, with gusts as high as 24 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 44 °F

    Chance Rain
    then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: Snow likely, mainly before 11pm.  Mostly cloudy, with a low around 12. Northwest wind 8 to 11 mph, with gusts as high as 24 mph.  Chance of precipitation is 60%.

    Low: 12 °F

    Snow Likely

  • Friday

    Friday: A chance of snow.  Mostly cloudy, with a high near 20. Southeast wind around 6 mph, with gusts as high as 15 mph.

    High: 20 °F

    Chance Snow

  • Friday Night

    Friday Night: A chance of snow, mainly before 11pm.  Mostly cloudy, with a low around 10.

    Low: 10 °F

    Chance Snow

Detailed Forecast

Tonight
A 10 percent chance of snow after 5am. Mostly cloudy, with a temperature rising to around 42 by 4am. West wind 9 to 18 mph, with gusts as high as 31 mph.
Tuesday
A 40 percent chance of rain, mainly after 11am. Mostly sunny, with a high near 52. Breezy, with a west wind 21 to 29 mph, with gusts as high as 45 mph.
Tuesday Night
Partly cloudy, with a low around 28. Wind chill values as low as 19. Blustery, with a northwest wind 21 to 26 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 46 mph.
Wednesday
Snow likely before 2pm, then rain and snow likely between 2pm and 3pm, then rain likely after 3pm. Mostly cloudy, with a high near 44. South wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 33. Northwest wind 10 to 13 mph, with gusts as high as 26 mph.
Thursday
A chance of rain before 4pm, then rain likely, possibly mixed with snow. Mostly cloudy, with a high near 44. West wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
Snow likely, mainly before 11pm. Mostly cloudy, with a low around 12. Northwest wind 8 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Friday
A chance of snow. Mostly cloudy, with a high near 20. Southeast wind around 6 mph, with gusts as high as 15 mph.
Friday Night
A chance of snow, mainly before 11pm. Mostly cloudy, with a low around 10.
Saturday
Mostly cloudy, with a high near 31.
Saturday Night
Mostly cloudy, with a low around 16.
Sunday
Mostly sunny, with a high near 46.
Sunday Night
Partly cloudy, with a low around 27.
Monday
Mostly sunny, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Custer State Park SD
 43.77°N 103.39°W (Elev. 4593 ft)
8:21 pm MST Dec 8, 2025
10pm MST Dec 8, 2025-6pm MST Dec 15, 2025
 
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Additional Resources

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