Heavy Mountain Snow in the Northwest U.S.; Wintry Mix in the Northeast U.S.

Two more cold fronts will pass through the Northwest U.S. this week with heavy mountain snow continuing across the Cascades, and northern Rockies. A quick moving storm system will bring mixed precipitation including some freezing rain across the Northeast U.S. overnight into Wednesday. 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 Calm
Barometer 29.65 in (1003.8 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 7 Jan 2:53 am MST
Extended Forecast for

3 Miles NNE Keystone SD

  • Overnight

    Overnight: Partly cloudy, with a low around 36. West wind around 7 mph.

    Low: 36 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 52. West wind 6 to 9 mph.

    High: 52 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 28. North wind 3 to 5 mph.

    Low: 28 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow after 11am.  Mostly cloudy, with a high near 35. Calm wind becoming northeast around 6 mph. Winds could gust as high as 16 mph.

    High: 35 °F

    Slight Chance
    Snow

  • Thursday Night

    Thursday Night: A 40 percent chance of snow, mainly before 11pm.  Mostly cloudy, with a low around 22. Calm wind becoming northwest around 6 mph after midnight. Winds could gust as high as 16 mph.  New snow accumulation of less than a half inch possible.

    Low: 22 °F

    Chance Snow

  • Friday

    Friday: Mostly sunny, with a high near 32. Northwest wind 8 to 11 mph, with gusts as high as 33 mph.

    High: 32 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly after 11pm.  Partly cloudy, with a low around 19. West wind 8 to 10 mph, with gusts as high as 26 mph.

    Low: 19 °F

    Chance Snow

  • Saturday

    Saturday: A slight chance of snow before 11am.  Partly sunny, with a high near 34. Northwest wind 7 to 10 mph, with gusts as high as 31 mph.

    High: 34 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 36. West wind around 7 mph.
Wednesday
Mostly sunny, with a high near 52. West wind 6 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 28. North wind 3 to 5 mph.
Thursday
A 20 percent chance of snow after 11am. Mostly cloudy, with a high near 35. Calm wind becoming northeast around 6 mph. Winds could gust as high as 16 mph.
Thursday Night
A 40 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 22. Calm wind becoming northwest around 6 mph after midnight. Winds could gust as high as 16 mph. New snow accumulation of less than a half inch possible.
Friday
Mostly sunny, with a high near 32. Northwest wind 8 to 11 mph, with gusts as high as 33 mph.
Friday Night
A 30 percent chance of snow, mainly after 11pm. Partly cloudy, with a low around 19. West wind 8 to 10 mph, with gusts as high as 26 mph.
Saturday
A slight chance of snow before 11am. Partly sunny, with a high near 34. Northwest wind 7 to 10 mph, with gusts as high as 31 mph.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 50.
Sunday Night
Partly cloudy, with a low around 33.
Monday
Sunny, with a high near 48.
Monday Night
Mostly cloudy, with a low around 32.
Tuesday
Partly sunny, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Keystone SD
 43.92°N 103.41°W (Elev. 4708 ft)
2:01 am MST Jan 7, 2026
3am MST Jan 7, 2026-6pm MST Jan 13, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database