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

29°F

-2°C

Humidity 75%
Wind Speed W 10 mph
Barometer 30.08 in (1019.8 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 9 Apr 3:53 am CDT
Extended Forecast for

4 Miles ESE Castlewood SD

  • Today

    Today: A chance of snow after 3pm. Increasing clouds, with a high near 43. Northwest wind 5 to 7 mph. Chance of precipitation is 50%.

    High: 43 °F

    Mostly Sunny
    then Chance
    Snow

  • Tonight

    Tonight: A chance of snow before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 22. North wind around 6 mph becoming calm after midnight. Chance of precipitation is 30%.

    Low: 22 °F

    Chance Snow
    then Partly
    Cloudy

  • Friday

    Friday: Sunny, with a high near 54. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 54 °F

    Sunny

  • Friday Night

    Friday Night: A slight chance of rain after 1am. Increasing clouds, with a low around 38. South southeast wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    Low: 38 °F

    Mostly Clear
    then Slight
    Chance Rain

  • Saturday

    Saturday: Rain likely, mainly before 1pm. Cloudy, with a high near 60. Breezy, with a south southeast wind 14 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 60 °F

    Rain Likely
    and Breezy

  • Saturday Night

    Saturday Night: A chance of rain. Mostly cloudy, with a low around 54. Breezy, with a south southeast wind 18 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 40%.

    Low: 54 °F

    Chance Rain
    and Breezy

  • Sunday

    Sunday: A chance of rain, mainly after 1pm. Mostly sunny, with a high near 76. Breezy, with a south wind 18 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 30%.

    High: 76 °F

    Chance Rain
    and Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47. West southwest wind 8 to 14 mph becoming north northeast after midnight. Winds could gust as high as 23 mph.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: A chance of rain, mainly after 1pm. Partly sunny, with a high near 66. Northeast wind 8 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.

    High: 66 °F

    Slight Chance
    Rain then
    Chance Rain

Detailed Forecast

Today
A chance of snow after 3pm. Increasing clouds, with a high near 43. Northwest wind 5 to 7 mph. Chance of precipitation is 50%.
Tonight
A chance of snow before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 22. North wind around 6 mph becoming calm after midnight. Chance of precipitation is 30%.
Friday
Sunny, with a high near 54. Calm wind becoming south southwest around 6 mph in the afternoon.
Friday Night
A slight chance of rain after 1am. Increasing clouds, with a low around 38. South southeast wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Saturday
Rain likely, mainly before 1pm. Cloudy, with a high near 60. Breezy, with a south southeast wind 14 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 54. Breezy, with a south southeast wind 18 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 40%.
Sunday
A chance of rain, mainly after 1pm. Mostly sunny, with a high near 76. Breezy, with a south wind 18 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 30%.
Sunday Night
Mostly clear, with a low around 47. West southwest wind 8 to 14 mph becoming north northeast after midnight. Winds could gust as high as 23 mph.
Monday
A chance of rain, mainly after 1pm. Partly sunny, with a high near 66. Northeast wind 8 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.
Monday Night
A chance of rain. Mostly cloudy, with a low around 37. Chance of precipitation is 50%.
Tuesday
A chance of rain. Mostly cloudy, with a high near 47. Chance of precipitation is 50%.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.
Wednesday
A chance of rain and snow. Partly sunny, with a high near 54. Chance of precipitation is 30%.
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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:
3:36 am CDT Apr 9, 2026
Forecast Valid:
4am CDT Apr 9, 2026-6pm CDT Apr 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation