National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

46°F

8°C

Humidity 89%
Wind Speed NW 6 mph
Barometer 29.96 in (1014.1 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 7 Oct 2:53 am CDT
Extended Forecast for

Castlewood SD

  • Overnight

    Overnight: Mostly clear, with a low around 47. North northwest wind around 8 mph.

    Low: 47 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 72. Light northwest wind becoming west northwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 46. North northwest wind 3 to 8 mph.

    Low: 46 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 67. Calm wind becoming south around 6 mph in the afternoon.

    High: 67 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49. South southeast wind 3 to 6 mph.

    Low: 49 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 76. South wind 7 to 13 mph, with gusts as high as 21 mph.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62. South wind 9 to 17 mph, with gusts as high as 29 mph.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81. Breezy, with a south wind 20 to 26 mph, with gusts as high as 38 mph.

    High: 81 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59. Breezy, with a south wind 18 to 23 mph, with gusts as high as 34 mph.

    Low: 59 °F

    Mostly Clear
    and Breezy

Detailed Forecast

Overnight
Mostly clear, with a low around 47. North northwest wind around 8 mph.
Wednesday
Sunny, with a high near 72. Light northwest wind becoming west northwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 46. North northwest wind 3 to 8 mph.
Thursday
Partly sunny, with a high near 67. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 49. South southeast wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 76. South wind 7 to 13 mph, with gusts as high as 21 mph.
Friday Night
Mostly clear, with a low around 62. South wind 9 to 17 mph, with gusts as high as 29 mph.
Saturday
Sunny, with a high near 81. Breezy, with a south wind 20 to 26 mph, with gusts as high as 38 mph.
Saturday Night
Mostly clear, with a low around 59. Breezy, with a south wind 18 to 23 mph, with gusts as high as 34 mph.
Sunday
Mostly sunny, with a high near 71. Breezy.
Sunday Night
Mostly cloudy, with a low around 48.
Columbus Day
A chance of showers. Mostly cloudy, with a high near 57. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 43. Chance of precipitation is 30%.
Tuesday
A slight chance of showers. Partly sunny, with a high near 57. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Castlewood SD
 44.72°N 97.02°W (Elev. 1683 ft)
Last Update:
3:21 am CDT Oct 7, 2026
Forecast Valid:
3am CDT Oct 7, 2026-6pm CDT Oct 13, 2026
 
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Additional Resources

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