Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Overcast

44°F

7°C

Humidity 53%
Wind Speed W 20 G 36 mph
Barometer 29.59 in (1001.7 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 9 Dec 10:53 am MST
Extended Forecast for

4 Miles NW Keystone SD

  • Today

    Today: A chance of rain before 3pm, then a slight chance of rain and snow between 3pm and 4pm, then a slight chance of snow after 4pm.  Partly sunny, with a temperature falling to around 34 by 5pm. Breezy, with a northwest wind 20 to 22 mph, with gusts as high as 44 mph.  Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 47 °F

    Chance
    Rain/Snow and
    Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 25. Wind chill values as low as 14. Blustery, with a northwest wind 17 to 22 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 38 mph.

    Low: 25 °F

    Partly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Wednesday

    Wednesday: Snow likely after 11am, mixing with rain after 4pm.  Mostly cloudy, with a high near 41. Wind chill values as low as 18. West wind 5 to 8 mph becoming southwest in the morning. Winds could gust as high as 24 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain.  Mostly cloudy, with a steady temperature around 39. West wind 9 to 11 mph, with gusts as high as 26 mph.

    Low: 39 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain before 4pm, then a chance of rain and snow.  Mostly cloudy, with a high near 46. Northwest wind around 9 mph, with gusts as high as 24 mph.  Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    High: 46 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Snow likely.  Mostly cloudy, with a low around 13. Northwest wind 7 to 9 mph, with gusts as high as 22 mph.  Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 13 °F

    Snow Likely

  • Friday

    Friday: Snow likely.  Mostly cloudy, with a high near 19. Northeast wind around 5 mph becoming southeast in the afternoon. Winds could gust as high as 16 mph.  Chance of precipitation is 60%.

    High: 19 °F

    Snow Likely

  • Friday Night

    Friday Night: A chance of snow.  Mostly cloudy, with a low around 8. Southeast wind around 6 mph becoming northwest after midnight.

    Low: 8 °F

    Chance Snow

  • Saturday

    Saturday: A chance of snow before 11am.  Partly sunny, with a high near 22.

    High: 22 °F

    Chance Snow
    then Partly
    Sunny

Detailed Forecast

Today
A chance of rain before 3pm, then a slight chance of rain and snow between 3pm and 4pm, then a slight chance of snow after 4pm. Partly sunny, with a temperature falling to around 34 by 5pm. Breezy, with a northwest wind 20 to 22 mph, with gusts as high as 44 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Tonight
Partly cloudy, with a low around 25. Wind chill values as low as 14. Blustery, with a northwest wind 17 to 22 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 38 mph.
Wednesday
Snow likely after 11am, mixing with rain after 4pm. Mostly cloudy, with a high near 41. Wind chill values as low as 18. West wind 5 to 8 mph becoming southwest in the morning. Winds could gust as high as 24 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 steady temperature around 39. West wind 9 to 11 mph, with gusts as high as 26 mph.
Thursday
A chance of rain before 4pm, then a chance of rain and snow. Mostly cloudy, with a high near 46. Northwest wind around 9 mph, with gusts as high as 24 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Thursday Night
Snow likely. Mostly cloudy, with a low around 13. Northwest wind 7 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Friday
Snow likely. Mostly cloudy, with a high near 19. Northeast wind around 5 mph becoming southeast in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 60%.
Friday Night
A chance of snow. Mostly cloudy, with a low around 8. Southeast wind around 6 mph becoming northwest after midnight.
Saturday
A chance of snow before 11am. Partly sunny, with a high near 22.
Saturday Night
Mostly cloudy, with a low around 11.
Sunday
Mostly sunny, with a high near 43.
Sunday Night
Partly cloudy, with a low around 25.
Monday
Mostly sunny, with a high near 42.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Keystone SD
 43.94°N 103.47°W (Elev. 5482 ft)
9:36 am MST Dec 9, 2025
11am MST Dec 9, 2025-6pm MST Dec 15, 2025
 
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Additional Resources

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