Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

38°F

3°C

Humidity 65%
Wind Speed Calm
Barometer 29.81 in (1008.6 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 14 Apr 8:53 pm MDT
Extended Forecast for

3 Miles SSE Custer County Airport SD

Fire Weather Watch April 16, 12:00pm until April 16, 07:00pm
Click here for hazard details and duration
Fire Weather Watch
  • Tonight

    Tonight: Mostly clear, with a low around 35. Calm wind.

    Low: 35 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 22 mph.

    High: 65 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45. West wind 6 to 9 mph, with gusts as high as 23 mph.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: A 50 percent chance of showers after noon.  Increasing clouds, with a high near 68. West wind 9 to 14 mph, with gusts as high as 33 mph.

    High: 68 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Rain showers before 11pm, then rain and snow showers between 11pm and midnight, then snow showers likely after midnight.  Low around 27. Southwest wind 6 to 9 mph becoming north in the evening. Winds could gust as high as 24 mph.  Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Rain/Snow
    then Snow
    Showers
    Likely

  • Friday

    Friday: Snow showers.  High near 38. North wind 6 to 11 mph, with gusts as high as 28 mph.  Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 38 °F

    Snow Showers

  • Friday Night

    Friday Night: A 20 percent chance of snow showers before midnight.  Mostly cloudy, with a low around 20. Northwest wind 9 to 13 mph, with gusts as high as 30 mph.

    Low: 20 °F

    Slight Chance
    Snow Showers
    then Partly
    Cloudy

  • Saturday

    Saturday: A chance of snow showers, mainly after noon.  Mostly sunny, with a high near 42. Northwest wind 9 to 14 mph, with gusts as high as 31 mph.

    High: 42 °F

    Chance Snow
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 35. Calm wind.
Wednesday
Sunny, with a high near 65. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 22 mph.
Wednesday Night
Mostly clear, with a low around 45. West wind 6 to 9 mph, with gusts as high as 23 mph.
Thursday
A 50 percent chance of showers after noon. Increasing clouds, with a high near 68. West wind 9 to 14 mph, with gusts as high as 33 mph.
Thursday Night
Rain showers before 11pm, then rain and snow showers between 11pm and midnight, then snow showers likely after midnight. Low around 27. Southwest wind 6 to 9 mph becoming north in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday
Snow showers. High near 38. North wind 6 to 11 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Friday Night
A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 20. Northwest wind 9 to 13 mph, with gusts as high as 30 mph.
Saturday
A chance of snow showers, mainly after noon. Mostly sunny, with a high near 42. Northwest wind 9 to 14 mph, with gusts as high as 31 mph.
Saturday Night
Mostly clear, with a low around 24.
Sunday
Sunny, with a high near 61.
Sunday Night
Mostly clear, with a low around 34.
Monday
Sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 72.
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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)
6:26 pm MDT Apr 14, 2026
9pm MDT Apr 14, 2026-6pm MDT Apr 21, 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