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 >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

52°F

11°C

Humidity 31%
Wind Speed Vrbl 7 mph
Barometer 29.78 in (1006.0 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 15 Apr 9:53 am MDT
Extended Forecast for

3 Miles NW Hill City SD

  • Today

    Today: Sunny, with a high near 63. Calm wind becoming southwest around 6 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 63 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 45. Southwest wind 5 to 10 mph, with gusts as high as 31 mph.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm.  Increasing clouds, with a high near 64. West wind 7 to 11 mph becoming northeast in the afternoon. Winds could gust as high as 34 mph.  Chance of precipitation is 40%.

    High: 64 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Rain showers before 8pm, then rain and snow showers between 8pm and 9pm, then snow showers after 9pm.  Low around 23. Wind chill values as low as 15. North wind 6 to 9 mph, with gusts as high as 29 mph.  Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    Low: 23 °F

    Rain/Snow
    then Snow
    Showers
    Likely

  • Friday

    Friday: Snow showers likely.  Mostly cloudy, with a high near 33. North wind around 10 mph, with gusts as high as 32 mph.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 33 °F

    Snow Showers
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of snow showers before midnight.  Mostly cloudy, then gradually becoming mostly clear, with a low around 19. Northwest wind 6 to 9 mph, with gusts as high as 31 mph.

    Low: 19 °F

    Slight Chance
    Snow Showers
    then Partly
    Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow showers, mainly after noon.  Mostly sunny, with a high near 40. Northwest wind 7 to 11 mph, with gusts as high as 33 mph.

    High: 40 °F

    Chance Snow
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 25. West wind 3 to 8 mph. Winds could gust as high as 28 mph.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 63. Calm wind becoming southwest around 6 mph in the afternoon. Winds could gust as high as 21 mph.
Tonight
Partly cloudy, with a low around 45. Southwest wind 5 to 10 mph, with gusts as high as 31 mph.
Thursday
A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Increasing clouds, with a high near 64. West wind 7 to 11 mph becoming northeast in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 40%.
Thursday Night
Rain showers before 8pm, then rain and snow showers between 8pm and 9pm, then snow showers after 9pm. Low around 23. Wind chill values as low as 15. North wind 6 to 9 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Friday
Snow showers likely. Mostly cloudy, with a high near 33. North wind around 10 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Friday Night
A 20 percent chance of snow showers before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 19. Northwest wind 6 to 9 mph, with gusts as high as 31 mph.
Saturday
A 30 percent chance of snow showers, mainly after noon. Mostly sunny, with a high near 40. Northwest wind 7 to 11 mph, with gusts as high as 33 mph.
Saturday Night
Mostly clear, with a low around 25. West wind 3 to 8 mph. Winds could gust as high as 28 mph.
Sunday
Sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 36.
Monday
Mostly sunny, with a high near 68.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Hill City SD
 43.95°N 103.62°W (Elev. 5617 ft)
10:12 am MDT Apr 15, 2026
10am MDT Apr 15, 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