Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

58°F

14°C

Humidity 31%
Wind Speed SW 8 G 22 mph
Barometer 29.80 in (1004.2 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 13 Apr 9:53 am MDT
Extended Forecast for

5 Miles SSW Rochford SD

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 4pm.  Sunny, with a temperature falling to around 52 by 5pm. Southwest wind 10 to 16 mph, with gusts as high as 36 mph.

    High: 58 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 33. West wind 6 to 11 mph becoming light  in the evening. Winds could gust as high as 29 mph.

    Low: 33 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers after noon.  Partly sunny, with a high near 55. Calm wind becoming southwest around 6 mph in the afternoon. Winds could gust as high as 16 mph.

    High: 55 °F

    Partly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before midnight.  Mostly cloudy, then gradually becoming mostly clear, with a low around 34. Light and variable wind.

    Low: 34 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers after noon.  Sunny, with a high near 60. Calm wind becoming southwest 5 to 7 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 60 °F

    Sunny then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41. Southwest wind 3 to 8 mph. Winds could gust as high as 24 mph.

    Low: 41 °F

    Mostly Clear

  • Thursday

    Thursday: A 50 percent chance of showers after noon.  Mostly sunny, with a high near 61. Southwest wind 8 to 14 mph, with gusts as high as 36 mph.

    High: 61 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Rain showers before 9pm, then rain and snow showers between 9pm and midnight, then snow showers likely after midnight.  Mostly cloudy, with a low around 21. West wind 10 to 13 mph becoming north in the evening. Winds could gust as high as 31 mph.

    Low: 21 °F

    Rain/Snow
    then Snow
    Showers
    Likely

  • Friday

    Friday: Snow showers likely.  Mostly cloudy, with a high near 32.

    High: 32 °F

    Snow Showers
    Likely

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 4pm. Sunny, with a temperature falling to around 52 by 5pm. Southwest wind 10 to 16 mph, with gusts as high as 36 mph.
Tonight
Mostly clear, with a low around 33. West wind 6 to 11 mph becoming light in the evening. Winds could gust as high as 29 mph.
Tuesday
A 30 percent chance of showers after noon. Partly sunny, with a high near 55. Calm wind becoming southwest around 6 mph in the afternoon. Winds could gust as high as 16 mph.
Tuesday Night
A 20 percent chance of showers before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 34. Light and variable wind.
Wednesday
A 20 percent chance of showers after noon. Sunny, with a high near 60. Calm wind becoming southwest 5 to 7 mph in the afternoon. Winds could gust as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 41. Southwest wind 3 to 8 mph. Winds could gust as high as 24 mph.
Thursday
A 50 percent chance of showers after noon. Mostly sunny, with a high near 61. Southwest wind 8 to 14 mph, with gusts as high as 36 mph.
Thursday Night
Rain showers before 9pm, then rain and snow showers between 9pm and midnight, then snow showers likely after midnight. Mostly cloudy, with a low around 21. West wind 10 to 13 mph becoming north in the evening. Winds could gust as high as 31 mph.
Friday
Snow showers likely. Mostly cloudy, with a high near 32.
Friday Night
A chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 18.
Saturday
A slight chance of snow showers. Mostly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Sunny, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Rochford SD
 44.05°N 103.78°W (Elev. 5810 ft)
7:26 am MDT Apr 13, 2026
10am MDT Apr 13, 2026-6pm MDT Apr 19, 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