Strong Atmospheric River Bringing Heavy Rain to the Pacific Northwest; Areas of Snow in the North-Central and Eastern U.S.

A strong atmospheric river will bring prolonged heavy rainfall along with gusty winds to the Pacific Northwest through much of this week. The heavy rainfall may lead to widespread urban and river flooding. Accumulating snow is expected over parts of the central Appalachians and Mid-Atlantic today as well as the Upper Midwest and the Upper Great Lakes this evening into Tuesday. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

A Few Clouds

30°F

-1°C

Humidity 56%
Wind Speed W 10 mph
Barometer 29.94 in (1016.6 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 8 Dec 6:53 am MST
Extended Forecast for

3 Miles W Custer County Airport SD

  • Today

    Today: A 20 percent chance of snow before 9am.  Mostly sunny, with a high near 42. West wind 7 to 11 mph, with gusts as high as 28 mph.

    High: 42 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. West wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 27 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of rain between 11am and 4pm, then a chance of snow after 4pm.  Mostly sunny, with a high near 48. Breezy, with a west wind 14 to 23 mph, with gusts as high as 36 mph.  Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 48 °F

    Breezy.
    Chance Rain
    then Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow.  Mostly cloudy, with a low around 24. Blustery, with a northwest wind 15 to 20 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 30 mph.

    Low: 24 °F

    Slight Chance
    Snow and
    Blustery

  • Wednesday

    Wednesday: Snow likely before 4pm, then rain and snow likely.  Mostly cloudy, with a high near 39. West wind 3 to 8 mph. Winds could gust as high as 20 mph.  Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Rain and snow likely.  Mostly cloudy, with a low around 28. West wind around 9 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Rain/Snow
    Likely

  • Thursday

    Thursday: A 50 percent chance of snow.  Mostly cloudy, with a high near 37. West wind around 8 mph, with gusts as high as 22 mph.

    High: 37 °F

    Chance Snow

  • Thursday Night

    Thursday Night: Snow likely.  Mostly cloudy, with a low around 12. Northwest wind around 6 mph, with gusts as high as 16 mph.

    Low: 12 °F

    Snow Likely

  • Friday

    Friday: A chance of snow.  Mostly cloudy, with a high near 21.

    High: 21 °F

    Chance Snow

Detailed Forecast

Today
A 20 percent chance of snow before 9am. Mostly sunny, with a high near 42. West wind 7 to 11 mph, with gusts as high as 28 mph.
Tonight
Mostly cloudy, with a low around 27. West wind 6 to 10 mph, with gusts as high as 18 mph.
Tuesday
A chance of rain between 11am and 4pm, then a chance of snow after 4pm. Mostly sunny, with a high near 48. Breezy, with a west wind 14 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 24. Blustery, with a northwest wind 15 to 20 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 30 mph.
Wednesday
Snow likely before 4pm, then rain and snow likely. Mostly cloudy, with a high near 39. West wind 3 to 8 mph. Winds could gust as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
Rain and snow likely. Mostly cloudy, with a low around 28. West wind around 9 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Thursday
A 50 percent chance of snow. Mostly cloudy, with a high near 37. West wind around 8 mph, with gusts as high as 22 mph.
Thursday Night
Snow likely. Mostly cloudy, with a low around 12. Northwest wind around 6 mph, with gusts as high as 16 mph.
Friday
A chance of snow. Mostly cloudy, with a high near 21.
Friday Night
A chance of snow, mainly before 11pm. Mostly cloudy, with a low around 9.
Saturday
Partly sunny, with a high near 33.
Saturday Night
Partly cloudy, with a low around 17.
Sunday
Mostly sunny, with a high near 43.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Custer County Airport SD
 43.73°N 103.69°W (Elev. 5400 ft)
6:36 am MST Dec 8, 2025
7am MST Dec 8, 2025-6pm MST Dec 14, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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