Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

29°F

-2°C

Humidity 72%
Wind Speed W 10 mph
Barometer 30.02 in (1019.9 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 7 Dec 5:53 pm MST
Extended Forecast for

3 Miles SSE Custer County Airport SD

  • Tonight

    Tonight: Partly cloudy, with a low around 23. West wind 5 to 8 mph, with gusts as high as 20 mph.

    Low: 23 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 43. West wind 6 to 10 mph, with gusts as high as 25 mph.

    High: 43 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 27. Wind chill values as low as 20. West wind 7 to 13 mph, with gusts as high as 26 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 49. Breezy, with a west wind 17 to 23 mph, with gusts as high as 40 mph.  Chance of precipitation is 30%.

    High: 49 °F

    Breezy.
    Chance Rain
    then Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow.  Mostly cloudy, with a low around 25. Blustery, with a northwest wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 40 mph.

    Low: 25 °F

    Chance Snow
    and Blustery

  • Wednesday

    Wednesday: Snow likely before 4pm, then rain and snow likely.  Mostly cloudy, with a high near 39. West wind 6 to 13 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 39 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Rain and snow likely before 11pm, then a chance of snow.  Mostly cloudy, with a low around 24. Northwest wind around 9 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%.

    Low: 24 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Thursday

    Thursday: A chance of snow.  Partly sunny, with a high near 33. Northwest wind around 8 mph, with gusts as high as 20 mph.

    High: 33 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A chance of snow.  Mostly cloudy, with a low around 8.

    Low: 8 °F

    Chance Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 23. West wind 5 to 8 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 43. West wind 6 to 10 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 27. Wind chill values as low as 20. West wind 7 to 13 mph, with gusts as high as 26 mph.
Tuesday
A chance of rain between 11am and 4pm, then a chance of snow after 4pm. Mostly sunny, with a high near 49. Breezy, with a west wind 17 to 23 mph, with gusts as high as 40 mph. Chance of precipitation is 30%.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 25. Blustery, with a northwest wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 40 mph.
Wednesday
Snow likely before 4pm, then rain and snow likely. Mostly cloudy, with a high near 39. West wind 6 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Wednesday Night
Rain and snow likely before 11pm, then a chance of snow. Mostly cloudy, with a low around 24. Northwest wind around 9 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Thursday
A chance of snow. Partly sunny, with a high near 33. Northwest wind around 8 mph, with gusts as high as 20 mph.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 8.
Friday
A chance of snow. Mostly cloudy, with a high near 20.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 5.
Saturday
Partly sunny, with a high near 34.
Saturday Night
Partly cloudy, with a low around 16.
Sunday
Mostly sunny, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Custer County Airport SD
 43.69°N 103.6°W (Elev. 5400 ft)
3:12 pm MST Dec 7, 2025
6pm MST Dec 7, 2025-6pm MST Dec 14, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database