Hazardous Coastal Conditions for the Mid-Atlantic; Storm System Approaching Southern Alaska

A Nor'easter will create hazardous marine and coastal conditions along the Mid-Atlantic coast through mid-week, with significant coastal flooding and beach erosion possible. Meanwhile, another strong storm system is forecast to bring high winds and heavy precipitation to portions of southern Alaska. Elsewhere, relatively benign weather is expected through the first half of the work week. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

54°F

12°C

Humidity 37%
Wind Speed NE 12 mph
Barometer 30.21 in (1019.3 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 18 Oct 4:53 pm MDT
Extended Forecast for

3 Miles SSE Keystone SD

  • Tonight

    Tonight: Mostly clear, with a low around 36. Northeast wind around 6 mph becoming calm  in the evening. Winds could gust as high as 20 mph.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 56. Calm wind becoming southeast around 6 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 56 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 44. Southeast wind 5 to 8 mph becoming west after midnight. Winds could gust as high as 21 mph.

    Low: 44 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73. West wind 3 to 7 mph. Winds could gust as high as 18 mph.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 48. Northwest wind 3 to 7 mph. Winds could gust as high as 20 mph.

    Low: 48 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65. Calm wind becoming east around 5 mph. Winds could gust as high as 16 mph.

    High: 65 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of rain after midnight.  Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy
    then Slight
    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 36. Northeast wind around 6 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Monday
Sunny, with a high near 56. Calm wind becoming southeast around 6 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Clear, with a low around 44. Southeast wind 5 to 8 mph becoming west after midnight. Winds could gust as high as 21 mph.
Tuesday
Sunny, with a high near 73. West wind 3 to 7 mph. Winds could gust as high as 18 mph.
Tuesday Night
Mostly clear, with a low around 48. Northwest wind 3 to 7 mph. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 65. Calm wind becoming east around 5 mph. Winds could gust as high as 16 mph.
Wednesday Night
Mostly clear, with a low around 50.
Thursday
Mostly sunny, with a high near 72.
Thursday Night
A slight chance of rain after midnight. Mostly cloudy, with a low around 58.
Friday
A slight chance of rain after noon. Partly sunny, with a high near 70.
Friday Night
A chance of rain. Mostly cloudy, with a low around 45.
Saturday
A slight chance of rain. Mostly sunny, with a high near 55.
Saturday Night
Partly cloudy, with a low around 39.
Sunday
Mostly sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Keystone SD
 43.85°N 103.4°W (Elev. 4600 ft)
3:36 pm MDT Oct 18, 2026
5pm MDT Oct 18, 2026-6pm MDT Oct 25, 2026
 
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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