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

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair and Breezy

68°F

20°C

Humidity 44%
Wind Speed SW 22 mph
Barometer 29.46 in (997.2 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 12 Apr 10:53 am CDT
Extended Forecast for

4 Miles ESE Castlewood SD

  • Today

    Today: Sunny, with a high near 79. Breezy, with a west southwest wind 21 to 23 mph, with gusts as high as 34 mph.

    High: 79 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Increasing clouds, with a low around 46. West wind 6 to 14 mph becoming east northeast after midnight. Winds could gust as high as 22 mph.

    Low: 46 °F

    Increasing
    Clouds

  • Monday

    Monday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 68. East wind 10 to 14 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 68 °F

    Showers
    Likely and
    Patchy Fog

  • Monday Night

    Monday Night: A slight chance of thunderstorms before 7pm. Partly cloudy, with a low around 42. North northeast wind 7 to 10 mph. Chance of precipitation is 10%.

    Low: 42 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers after 1pm. Mostly cloudy, with a high near 63. North wind 7 to 11 mph. Chance of precipitation is 30%.

    High: 63 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers. Mostly cloudy, with a low around 43. North wind 6 to 9 mph becoming east southeast after midnight. Chance of precipitation is 20%.

    Low: 43 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers. Partly sunny, with a high near 68. East southeast wind 6 to 11 mph. Chance of precipitation is 40%.

    High: 68 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers before 1am. Partly cloudy, with a low around 45. Southeast wind around 9 mph. Chance of precipitation is 20%.

    Low: 45 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Sunny, with a high near 75. South wind 10 to 17 mph, with gusts as high as 28 mph.

    High: 75 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 79. Breezy, with a west southwest wind 21 to 23 mph, with gusts as high as 34 mph.
Tonight
Increasing clouds, with a low around 46. West wind 6 to 14 mph becoming east northeast after midnight. Winds could gust as high as 22 mph.
Monday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 68. East wind 10 to 14 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
A slight chance of thunderstorms before 7pm. Partly cloudy, with a low around 42. North northeast wind 7 to 10 mph. Chance of precipitation is 10%.
Tuesday
A chance of showers after 1pm. Mostly cloudy, with a high near 63. North wind 7 to 11 mph. Chance of precipitation is 30%.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 43. North wind 6 to 9 mph becoming east southeast after midnight. Chance of precipitation is 20%.
Wednesday
A chance of showers. Partly sunny, with a high near 68. East southeast wind 6 to 11 mph. Chance of precipitation is 40%.
Wednesday Night
A slight chance of showers before 1am. Partly cloudy, with a low around 45. Southeast wind around 9 mph. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 75. South wind 10 to 17 mph, with gusts as high as 28 mph.
Thursday Night
A chance of showers, mainly after 1am. Partly cloudy, with a low around 39. Chance of precipitation is 30%.
Friday
A chance of rain and snow showers. Partly sunny, with a high near 48. Breezy. Chance of precipitation is 40%.
Friday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 25. Blustery. Chance of precipitation is 30%.
Saturday
A slight chance of snow showers. Partly sunny, with a high near 43. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Castlewood SD
 44.72°N 96.96°W (Elev. 1749 ft)
Last Update:
10:36 am CDT Apr 12, 2026
Forecast Valid:
11am CDT Apr 12, 2026-6pm CDT Apr 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation