National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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 >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

30°F

-1°C

Humidity 47%
Wind Speed NW 10 G 22 mph
Barometer 30.02 in (1018.4 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 10 Dec 4:53 am MST
Extended Forecast for

Edgemont SD

  • Today

    Today: A 30 percent chance of rain, mainly between 2pm and 5pm. Mostly cloudy, with a high near 43. West wind 5 to 9 mph becoming east in the afternoon. Winds could gust as high as 16 mph.

    High: 43 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tonight

    Tonight: A 20 percent chance of rain before 8pm. Partly cloudy, with a steady temperature around 39. Northwest wind 6 to 14 mph becoming west after midnight. Winds could gust as high as 20 mph.

    Low: 39 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 60. Breezy, with a west wind 16 to 26 mph, with gusts as high as 43 mph.

    High: 60 °F

    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: A chance of rain before 11pm, then a chance of rain and snow between 11pm and 1am, then a chance of snow after 1am. Mostly cloudy, with a low around 26. Blustery, with a northwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 26 °F

    Chance
    Rain/Snow and
    Blustery

  • Friday

    Friday: A 40 percent chance of snow, mainly before 11am. Mostly cloudy, with a high near 33. Southeast wind 7 to 9 mph becoming east in the afternoon. Winds could gust as high as 16 mph. New snow accumulation of less than a half inch possible.

    High: 33 °F

    Chance Snow

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 16. East wind 6 to 8 mph becoming north after midnight.

    Low: 16 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 31. East wind 7 to 9 mph, with gusts as high as 16 mph.

    High: 31 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 13. East wind 5 to 7 mph becoming north after midnight.

    Low: 13 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

Detailed Forecast

Today
A 30 percent chance of rain, mainly between 2pm and 5pm. Mostly cloudy, with a high near 43. West wind 5 to 9 mph becoming east in the afternoon. Winds could gust as high as 16 mph.
Tonight
A 20 percent chance of rain before 8pm. Partly cloudy, with a steady temperature around 39. Northwest wind 6 to 14 mph becoming west after midnight. Winds could gust as high as 20 mph.
Thursday
Mostly sunny, with a high near 60. Breezy, with a west wind 16 to 26 mph, with gusts as high as 43 mph.
Thursday Night
A chance of rain before 11pm, then a chance of rain and snow between 11pm and 1am, then a chance of snow after 1am. Mostly cloudy, with a low around 26. Blustery, with a northwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Friday
A 40 percent chance of snow, mainly before 11am. Mostly cloudy, with a high near 33. Southeast wind 7 to 9 mph becoming east in the afternoon. Winds could gust as high as 16 mph. New snow accumulation of less than a half inch possible.
Friday Night
Mostly cloudy, with a low around 16. East wind 6 to 8 mph becoming north after midnight.
Saturday
Partly sunny, with a high near 31. East wind 7 to 9 mph, with gusts as high as 16 mph.
Saturday Night
Partly cloudy, with a low around 13. East wind 5 to 7 mph becoming north after midnight.
Sunday
Sunny, with a high near 49.
Sunday Night
Mostly clear, with a low around 26.
Monday
Sunny, with a high near 53.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Mostly sunny, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Edgemont SD
 43.29°N 103.83°W (Elev. 3589 ft)
Last Update:
4:16 am MST Dec 10, 2025
Forecast Valid:
5am MST Dec 10, 2025-6pm MST Dec 16, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation