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

61°F

16°C

Humidity 14%
Wind Speed W 12 G 21 mph
Barometer 29.73 in (1004.3 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Last update 15 Apr 2:53 pm MDT
Extended Forecast for

3 Miles NNE Custer State Park SD

Red Flag Warning April 16, 12:00pm until April 16, 07:00pm
Click here for hazard details and duration
Red Flag Warning
  • Tonight

    Tonight: Mostly clear, with a low around 49. Southwest wind 8 to 16 mph, with gusts as high as 30 mph.

    Low: 49 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm.  Partly sunny, with a high near 70. West wind 14 to 18 mph becoming northeast in the afternoon. Winds could gust as high as 38 mph.  Chance of precipitation is 30%.

    High: 70 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Rain showers before 11pm, then snow showers.  Low around 30. North wind 13 to 18 mph, with gusts as high as 33 mph.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Rain/Snow
    then Snow
    Showers
    Likely

  • Friday

    Friday: Snow showers likely, mainly before noon.  Mostly cloudy, with a high near 42. Northwest wind around 14 mph, with gusts as high as 31 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Snow Showers
    Likely

  • Friday Night

    Friday Night: Partly cloudy, with a low around 24. Northwest wind 9 to 14 mph, with gusts as high as 30 mph.

    Low: 24 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow showers, mainly after noon.  Mostly sunny, with a high near 49. Northwest wind 9 to 16 mph, with gusts as high as 36 mph.

    High: 49 °F

    Chance Snow
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 30. Northwest wind 8 to 13 mph becoming light west. Winds could gust as high as 30 mph.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 65. West wind 6 to 9 mph becoming southeast in the morning. Winds could gust as high as 22 mph.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 49. Southwest wind 8 to 16 mph, with gusts as high as 30 mph.
Thursday
A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 70. West wind 14 to 18 mph becoming northeast in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 30%.
Thursday Night
Rain showers before 11pm, then snow showers. Low around 30. North wind 13 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Friday
Snow showers likely, mainly before noon. Mostly cloudy, with a high near 42. Northwest wind around 14 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday Night
Partly cloudy, with a low around 24. Northwest wind 9 to 14 mph, with gusts as high as 30 mph.
Saturday
A 30 percent chance of snow showers, mainly after noon. Mostly sunny, with a high near 49. Northwest wind 9 to 16 mph, with gusts as high as 36 mph.
Saturday Night
Mostly clear, with a low around 30. Northwest wind 8 to 13 mph becoming light west. Winds could gust as high as 30 mph.
Sunday
Sunny, with a high near 65. West wind 6 to 9 mph becoming southeast in the morning. Winds could gust as high as 22 mph.
Sunday Night
Mostly clear, with a low around 39.
Monday
Mostly sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 45.
Tuesday
Sunny, with a high near 75.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 49.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Custer State Park SD
 43.77°N 103.39°W (Elev. 4593 ft)
2:27 pm MDT Apr 15, 2026
3pm MDT Apr 15, 2026-6pm MDT Apr 22, 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