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.

Overcast

37°F

3°C

Humidity 57%
Wind Speed N 9 mph
Barometer 30.18 in (1023.9 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 9 Apr 3:53 pm CDT
Extended Forecast for

4 Miles ESE Castlewood SD

  • This Afternoon

    This Afternoon: A chance of snow. Cloudy, with a steady temperature around 38. North northwest wind around 7 mph. Chance of precipitation is 40%.

    High: 38 °F

    Chance Snow

  • Tonight

    Tonight: Snow likely, mixing with rain after 7pm, then gradually ending. Cloudy, then gradually becoming partly cloudy, with a low around 23. North northwest wind 3 to 7 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Rain/Snow
    Likely then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 53. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 53 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 36. South southeast wind 5 to 13 mph, with gusts as high as 21 mph.

    Low: 36 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Rain likely, mainly before 1pm. Cloudy, with a high near 59. Breezy, with a south southeast wind 15 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 59 °F

    Rain Likely
    and Breezy

  • Saturday Night

    Saturday Night: A chance of rain. Cloudy, with a low around 53. Breezy, with a south southeast wind 18 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 50%.

    Low: 53 °F

    Chance Rain
    and Breezy

  • Sunday

    Sunday: A chance of rain, mainly before 1pm. Mostly sunny, with a high near 79. Breezy, with a west southwest wind 18 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.

    High: 79 °F

    Chance Rain
    and Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 46. West wind 7 to 14 mph becoming northeast after midnight. Winds could gust as high as 23 mph.

    Low: 46 °F

    Mostly Clear

  • Monday

    Monday: A chance of rain and thunderstorms after 1pm. Partly sunny, with a high near 67. East northeast wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

    High: 67 °F

    Partly Sunny
    then Chance
    Rain

Detailed Forecast

This Afternoon
A chance of snow. Cloudy, with a steady temperature around 38. North northwest wind around 7 mph. Chance of precipitation is 40%.
Tonight
Snow likely, mixing with rain after 7pm, then gradually ending. Cloudy, then gradually becoming partly cloudy, with a low around 23. North northwest wind 3 to 7 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
Mostly sunny, with a high near 53. Calm wind becoming southwest around 6 mph in the afternoon.
Friday Night
Increasing clouds, with a low around 36. South southeast wind 5 to 13 mph, with gusts as high as 21 mph.
Saturday
Rain likely, mainly before 1pm. Cloudy, with a high near 59. Breezy, with a south southeast wind 15 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
A chance of rain. Cloudy, with a low around 53. Breezy, with a south southeast wind 18 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 50%.
Sunday
A chance of rain, mainly before 1pm. Mostly sunny, with a high near 79. Breezy, with a west southwest wind 18 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
Sunday Night
Mostly clear, with a low around 46. West wind 7 to 14 mph becoming northeast after midnight. Winds could gust as high as 23 mph.
Monday
A chance of rain and thunderstorms after 1pm. Partly sunny, with a high near 67. East northeast wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Monday Night
A chance of rain and thunderstorms. Mostly cloudy, with a low around 43. Chance of precipitation is 40%.
Tuesday
A chance of rain. Mostly cloudy, with a high near 56. Chance of precipitation is 50%.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 37. Chance of precipitation is 40%.
Wednesday
A chance of rain. Partly sunny, with a high near 61. 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:
4:01 pm CDT Apr 9, 2026
Forecast Valid:
4pm CDT Apr 9, 2026-6pm CDT Apr 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation