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.

Partly Cloudy

39°F

4°C

Humidity 70%
Wind Speed S 14 mph
Barometer 29.69 in (1007.2 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 7 Mar 9:53 pm CDT
Extended Forecast for

4 Miles ESE Castlewood SD

  • Tonight

    Tonight: Mostly cloudy early, then becoming mostly clear, with a low around 33. West southwest wind 11 to 16 mph, with gusts as high as 26 mph.

    Low: 33 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 61. Breezy, with a west southwest wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 33 mph.

    High: 61 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 34. West southwest wind 10 to 14 mph becoming north after midnight. Winds could gust as high as 24 mph.

    Low: 34 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 49. North northeast wind 10 to 13 mph.

    High: 49 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A slight chance of snow after midnight. Mostly cloudy, with a low around 27. Northeast wind 13 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 27 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: A slight chance of snow after noon. Mostly cloudy, with a high near 41. Northeast wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 41 °F

    Cloudy then
    Slight Chance
    Snow

  • Tuesday Night

    Tuesday Night: A chance of snow. Mostly cloudy, with a low around 22. North wind 10 to 16 mph. Chance of precipitation is 40%.

    Low: 22 °F

    Chance Snow

  • Wednesday

    Wednesday: Partly sunny, with a high near 38. Northwest wind 10 to 17 mph, with gusts as high as 25 mph.

    High: 38 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 24. Northwest wind 6 to 14 mph becoming southwest after midnight.

    Low: 24 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy early, then becoming mostly clear, with a low around 33. West southwest wind 11 to 16 mph, with gusts as high as 26 mph.
Sunday
Mostly sunny, with a high near 61. Breezy, with a west southwest wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 33 mph.
Sunday Night
Mostly clear, with a low around 34. West southwest wind 10 to 14 mph becoming north after midnight. Winds could gust as high as 24 mph.
Monday
Mostly sunny, with a high near 49. North northeast wind 10 to 13 mph.
Monday Night
A slight chance of snow after midnight. Mostly cloudy, with a low around 27. Northeast wind 13 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Tuesday
A slight chance of snow after noon. Mostly cloudy, with a high near 41. Northeast wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 22. North wind 10 to 16 mph. Chance of precipitation is 40%.
Wednesday
Partly sunny, with a high near 38. Northwest wind 10 to 17 mph, with gusts as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 24. Northwest wind 6 to 14 mph becoming southwest after midnight.
Thursday
Mostly cloudy, with a high near 53. Breezy.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 27. Blustery. Chance of precipitation is 40%.
Friday
Mostly cloudy, with a high near 39. Breezy.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 19. Chance of precipitation is 20%.
Saturday
A chance of snow. Mostly cloudy, with a high near 39. 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:
8:46 pm CST Mar 7, 2026
Forecast Valid:
9pm CST Mar 7, 2026-6pm CDT Mar 14, 2026
 
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Additional Resources

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