Cold Temperatures for the Eastern U.S.; Lake Effect Snow in the Great Lakes; Heavy Rain in the Pacific Northwest

Cold temperatures will continue across much of the eastern U.S. into today. Heavy lake effect snow continues into today east of Lakes Erie and Ontario. Two Pacific cold fronts will cross the Pacific Northwest early this week followed by another atmospheric river. Heavy rain and gusty winds are expected through midweek, with the potential for renewed urban and river flooding. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

47°F

8°C

Humidity 29%
Wind Speed Calm
Barometer 30.13 in (1018.0 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 15 Dec 7:53 am MST
Extended Forecast for

Mount Rushmore SD

  • Today

    Today: Sunny, with a high near 60. West wind 3 to 6 mph. Winds could gust as high as 16 mph.

    High: 60 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a steady temperature around 48. West wind around 10 mph, with gusts as high as 18 mph.

    Low: 48 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a temperature rising to near 52 by 9am, then falling to around 43 during the remainder of the day. Northwest wind 5 to 7 mph, with gusts as high as 21 mph.

    High: 52 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a temperature rising to around 42 by 5am. West wind 5 to 8 mph, with gusts as high as 23 mph.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of rain after 11am.  Mostly sunny, with a high near 55. Southwest wind around 11 mph, with gusts as high as 32 mph.

    High: 55 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow before 11pm.  Partly cloudy, with a low around 22. Northwest wind 14 to 16 mph, with gusts as high as 37 mph.

    Low: 22 °F

    Chance Snow
    then Partly
    Cloudy

  • Thursday

    Thursday: Increasing clouds, with a high near 35. Northwest wind 5 to 10 mph becoming light and variable  in the afternoon. Winds could gust as high as 28 mph.

    High: 35 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 28. Light southwest wind becoming west 6 to 11 mph in the evening. Winds could gust as high as 28 mph.

    Low: 28 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of rain after 5pm.  Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny
    then Chance
    Rain

Detailed Forecast

Today
Sunny, with a high near 60. West wind 3 to 6 mph. Winds could gust as high as 16 mph.
Tonight
Mostly cloudy, with a steady temperature around 48. West wind around 10 mph, with gusts as high as 18 mph.
Tuesday
Mostly sunny, with a temperature rising to near 52 by 9am, then falling to around 43 during the remainder of the day. Northwest wind 5 to 7 mph, with gusts as high as 21 mph.
Tuesday Night
Partly cloudy, with a temperature rising to around 42 by 5am. West wind 5 to 8 mph, with gusts as high as 23 mph.
Wednesday
A 40 percent chance of rain after 11am. Mostly sunny, with a high near 55. Southwest wind around 11 mph, with gusts as high as 32 mph.
Wednesday Night
A 30 percent chance of snow before 11pm. Partly cloudy, with a low around 22. Northwest wind 14 to 16 mph, with gusts as high as 37 mph.
Thursday
Increasing clouds, with a high near 35. Northwest wind 5 to 10 mph becoming light and variable in the afternoon. Winds could gust as high as 28 mph.
Thursday Night
Mostly cloudy, with a low around 28. Light southwest wind becoming west 6 to 11 mph in the evening. Winds could gust as high as 28 mph.
Friday
A chance of rain after 5pm. Mostly sunny, with a high near 55.
Friday Night
A chance of rain before 9pm, then a chance of snow. Mostly cloudy, with a low around 33.
Saturday
A slight chance of snow. Partly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
Mostly sunny, with a high near 43.
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Rushmore SD
 43.87°N 103.46°W (Elev. 5000 ft)
6:06 am MST Dec 15, 2025
8am MST Dec 15, 2025-6pm MST Dec 21, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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