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.

A Few Clouds

32°F

0°C

Humidity 92%
Wind Speed SW 7 mph
Barometer 30.34 in (1029.6 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 10 Apr 9:53 am CDT
Extended Forecast for

4 Miles ESE Castlewood SD

  • Today

    Today: Sunny, with a high near 53. West southwest wind 6 to 9 mph.

    High: 53 °F

    Sunny

  • Tonight

    Tonight: A slight chance of showers after 5am. Increasing clouds, with a low around 36. Light south wind becoming south southeast 8 to 13 mph in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 10%.

    Low: 36 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Showers likely, mainly between 7am and 1pm. Cloudy, with a high near 58. Breezy, with a south southeast wind 15 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 58 °F

    Showers
    Likely and
    Breezy

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 51. South southeast wind around 18 mph, with gusts as high as 31 mph. Chance of precipitation is 40%.

    Low: 51 °F

    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers before 1pm. Mostly sunny, with a high near 77. Breezy, with a south wind 17 to 20 mph becoming west in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 20%.

    High: 77 °F

    Slight Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 46. West wind 6 to 14 mph becoming northeast after midnight. Winds could gust as high as 22 mph.

    Low: 46 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 71. East northeast wind 7 to 15 mph. Chance of precipitation is 40%.

    High: 71 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of rain, mainly before 1am. Mostly cloudy, with a low around 45. East northeast wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    Low: 45 °F

    Chance Rain

  • Tuesday

    Tuesday: A chance of rain, then rain likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 63. Northeast wind 10 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 63 °F

    Rain Likely

Detailed Forecast

Today
Sunny, with a high near 53. West southwest wind 6 to 9 mph.
Tonight
A slight chance of showers after 5am. Increasing clouds, with a low around 36. Light south wind becoming south southeast 8 to 13 mph in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 10%.
Saturday
Showers likely, mainly between 7am and 1pm. Cloudy, with a high near 58. Breezy, with a south southeast wind 15 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 51. South southeast wind around 18 mph, with gusts as high as 31 mph. Chance of precipitation is 40%.
Sunday
A slight chance of showers before 1pm. Mostly sunny, with a high near 77. Breezy, with a south wind 17 to 20 mph becoming west in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 46. West wind 6 to 14 mph becoming northeast after midnight. Winds could gust as high as 22 mph.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 71. East northeast wind 7 to 15 mph. Chance of precipitation is 40%.
Monday Night
A chance of rain, mainly before 1am. Mostly cloudy, with a low around 45. East northeast wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Tuesday
A chance of rain, then rain likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 63. Northeast wind 10 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 40. Chance of precipitation is 50%.
Wednesday
A chance of rain. Mostly sunny, with a high near 65. Chance of precipitation is 30%.
Wednesday Night
A slight chance of rain. Mostly clear, with a low around 43. Chance of precipitation is 20%.
Thursday
A slight chance of rain. Mostly sunny, with a high near 64. Breezy. Chance of precipitation is 20%.
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Forecast Area
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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 10, 2026
Forecast Valid:
10am CDT Apr 10, 2026-6pm CDT Apr 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation