Sinlaku Continues to Impact the Marianas; Severe Weather for the Central Plains and Northeast; Record Warmth for mid-Atlantic to Southeast

Sinlaku continues to affect the Marianas as it moves north through Friday. Meanwhile, severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley today and for the Central/Southern Plains on Friday. Considerable flooding impacts are ongoing in the Upper Great Lakes, and expected to continue through the weekend. Fire weather concerns persist in the Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

63°F

17°C

Humidity 22%
Wind Speed NA
Barometer 29.69 in (1000.0 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 16 Apr 12:53 pm MDT
Extended Forecast for

5 Miles WSW Mount Rushmore SD

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms after 4pm.  Mostly cloudy, with a high near 62. Southwest wind 9 to 14 mph, with gusts as high as 32 mph.

    High: 62 °F

    Chance
    Showers

  • Tonight

    Tonight: Rain showers before 10pm, then a chance of rain and snow showers between 10pm and 11pm, then a chance of snow showers after 11pm.  Low around 21. Wind chill values as low as 9. North wind 8 to 17 mph, with gusts as high as 29 mph.  Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 21 °F

    Rain/Snow
    then Chance
    Snow Showers

  • Friday

    Friday: A 20 percent chance of snow showers before noon.  Mostly cloudy, with a high near 32. Wind chill values as low as 8. Northwest wind 14 to 16 mph, with gusts as high as 31 mph.

    High: 32 °F

    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Mostly clear, with a low around 19. Wind chill values as low as 7. Northwest wind 13 to 16 mph, with gusts as high as 31 mph.

    Low: 19 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of snow showers, mainly after noon.  Mostly sunny, with a high near 41. Northwest wind 14 to 16 mph, with gusts as high as 34 mph.

    High: 41 °F

    Chance Snow
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 25. West wind 7 to 14 mph, with gusts as high as 33 mph.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 56. West wind 6 to 10 mph becoming south in the afternoon. Winds could gust as high as 22 mph.

    High: 56 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 33. Southeast wind 7 to 10 mph becoming west in the evening. Winds could gust as high as 21 mph.

    Low: 33 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 62. Southwest wind 9 to 14 mph, with gusts as high as 32 mph.
Tonight
Rain showers before 10pm, then a chance of rain and snow showers between 10pm and 11pm, then a chance of snow showers after 11pm. Low around 21. Wind chill values as low as 9. North wind 8 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday
A 20 percent chance of snow showers before noon. Mostly cloudy, with a high near 32. Wind chill values as low as 8. Northwest wind 14 to 16 mph, with gusts as high as 31 mph.
Friday Night
Mostly clear, with a low around 19. Wind chill values as low as 7. Northwest wind 13 to 16 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 41. Northwest wind 14 to 16 mph, with gusts as high as 34 mph.
Saturday Night
Mostly clear, with a low around 25. West wind 7 to 14 mph, with gusts as high as 33 mph.
Sunday
Sunny, with a high near 56. West wind 6 to 10 mph becoming south in the afternoon. Winds could gust as high as 22 mph.
Sunday Night
Mostly clear, with a low around 33. Southeast wind 7 to 10 mph becoming west in the evening. Winds could gust as high as 21 mph.
Monday
Mostly sunny, with a high near 67.
Monday Night
Mostly clear, with a low around 40.
Tuesday
Sunny, with a high near 69.
Tuesday Night
Partly cloudy, with a low around 45.
Wednesday
A chance of showers. Mostly sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Mount Rushmore SD
 43.85°N 103.55°W (Elev. 6490 ft)
1:26 pm MDT Apr 16, 2026
1pm MDT Apr 16, 2026-6pm MDT Apr 22, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database