Tropical Moisture Brings Heavy Rain to Southwest; Strong Coastal Low to Impact the East Coast

Deep tropical moisture surging into the Southwest U.S. will lead to widespread showers and thunderstorms capable of producing flash flooding the next several days. A strong coastal low will develop late Friday and is expected to bring flooding, high surf, dangerous rip currents, gusty winds and heavy rain to much of the U.S. East Coast through early next week. Read More >

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

64°F

18°C

Humidity 68%
Wind Speed W 6 mph
Barometer 30.06 in (1018.0 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 9 Oct 7:53 pm CDT
Extended Forecast for

7 Miles N Castlewood SD

  • Tonight

    Tonight: Mostly clear, with a low around 45. West wind 6 to 9 mph becoming north after midnight.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 66. North wind 8 to 10 mph.

    High: 66 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41. Northeast wind 5 to 8 mph becoming southeast after midnight.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 67. South southeast wind 10 to 18 mph, with gusts as high as 29 mph.

    High: 67 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: A chance of showers before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am.  Mostly cloudy, with a low around 51. Breezy, with a south southeast wind 17 to 22 mph, with gusts as high as 36 mph.  Chance of precipitation is 50%.

    Low: 51 °F

    Chance
    Showers and
    Breezy

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 1pm.  Mostly sunny, with a high near 77. Breezy, with a south southeast wind 21 to 23 mph, with gusts as high as 36 mph.  Chance of precipitation is 50%.

    High: 77 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 39. South wind 15 to 17 mph becoming west northwest after midnight. Winds could gust as high as 28 mph.  Chance of precipitation is 20%.

    Low: 39 °F

    Slight Chance
    T-storms

  • Columbus Day

    Columbus Day: Sunny, with a high near 55. West northwest wind 13 to 15 mph, with gusts as high as 24 mph.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Areas of frost after 4am.  Otherwise, partly cloudy, with a low around 34. North wind 6 to 9 mph.

    Low: 34 °F

    Mostly Clear
    then Areas
    Frost

Detailed Forecast

Tonight
Mostly clear, with a low around 45. West wind 6 to 9 mph becoming north after midnight.
Friday
Sunny, with a high near 66. North wind 8 to 10 mph.
Friday Night
Mostly clear, with a low around 41. Northeast wind 5 to 8 mph becoming southeast after midnight.
Saturday
Increasing clouds, with a high near 67. South southeast wind 10 to 18 mph, with gusts as high as 29 mph.
Saturday Night
A chance of showers before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 51. Breezy, with a south southeast wind 17 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 50%.
Sunday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 77. Breezy, with a south southeast wind 21 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 50%.
Sunday Night
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 39. South wind 15 to 17 mph becoming west northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 20%.
Columbus Day
Sunny, with a high near 55. West northwest wind 13 to 15 mph, with gusts as high as 24 mph.
Monday Night
Areas of frost after 4am. Otherwise, partly cloudy, with a low around 34. North wind 6 to 9 mph.
Tuesday
Areas of frost before 9am. Otherwise, partly sunny, with a high near 53.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
A slight chance of showers. Partly sunny, with a high near 59. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 44. Chance of precipitation is 20%.
Thursday
A slight chance of showers. Partly sunny, with a high near 60. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles N Castlewood SD
 44.82°N 97.05°W (Elev. 1709 ft)
7:36 pm CDT Oct 9, 2025
8pm CDT Oct 9, 2025-6pm CDT Oct 16, 2025
 
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Additional Resources

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Hourly Weather Forecast

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