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

32°F

0°C

Humidity 38%
Wind Speed N 16 G 28 mph
Barometer 30.44 in (1033.2 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 6 Apr 4:53 pm CDT
Extended Forecast for

4 Miles ESE Castlewood SD

  • Tonight

    Tonight: Partly cloudy, with a low around 16. North northeast wind 6 to 13 mph becoming east after midnight. Winds could gust as high as 24 mph.

    Low: 16 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 40. Breezy, with a south wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 40 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 31. Breezy, with a south wind 20 to 22 mph, with gusts as high as 33 mph.

    Low: 31 °F

    Mostly Cloudy
    and Breezy

  • Wednesday

    Wednesday: A slight chance of rain before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 54. Breezy, with a south wind 13 to 23 mph becoming west northwest in the morning. Winds could gust as high as 36 mph. Chance of precipitation is 20%.

    High: 54 °F

    Slight Chance
    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 25. Breezy, with a west wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 31 mph.

    Low: 25 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Thursday

    Thursday: A slight chance of rain and snow after 1pm. Mostly sunny, with a high near 46. Northwest wind around 10 mph. Chance of precipitation is 20%.

    High: 46 °F

    Mostly Sunny
    then Slight
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A slight chance of rain and snow. Partly cloudy, with a low around 25. North wind 3 to 8 mph. Chance of precipitation is 20%.

    Low: 25 °F

    Slight Chance
    Rain/Snow

  • Friday

    Friday: Mostly sunny, with a high near 53. North wind 5 to 8 mph.

    High: 53 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 35. East wind 7 to 10 mph.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 16. North northeast wind 6 to 13 mph becoming east after midnight. Winds could gust as high as 24 mph.
Tuesday
Mostly sunny, with a high near 40. Breezy, with a south wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Tuesday Night
Mostly cloudy, with a low around 31. Breezy, with a south wind 20 to 22 mph, with gusts as high as 33 mph.
Wednesday
A slight chance of rain before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 54. Breezy, with a south wind 13 to 23 mph becoming west northwest in the morning. Winds could gust as high as 36 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 25. Breezy, with a west wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 31 mph.
Thursday
A slight chance of rain and snow after 1pm. Mostly sunny, with a high near 46. Northwest wind around 10 mph. Chance of precipitation is 20%.
Thursday Night
A slight chance of rain and snow. Partly cloudy, with a low around 25. North wind 3 to 8 mph. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 53. North wind 5 to 8 mph.
Friday Night
Partly cloudy, with a low around 35. East wind 7 to 10 mph.
Saturday
A chance of rain. Mostly cloudy, with a high near 56. Breezy. Chance of precipitation is 40%.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.
Sunday
Rain likely. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 47. Chance of precipitation is 50%.
Monday
A chance of rain. Partly sunny, with a high near 67. Chance of precipitation is 50%.
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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:
5:36 pm CDT Apr 6, 2026
Forecast Valid:
5pm CDT Apr 6, 2026-6pm CDT Apr 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation