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 and Breezy

68°F

20°C

Humidity 21%
Wind Speed SW 24 G 32 mph
Barometer 29.81 in (1009.9 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 2 May 5:53 pm CDT
Extended Forecast for

4 Miles ESE Castlewood SD

  • Tonight

    Tonight: A slight chance of showers between 8pm and 10pm. Mostly cloudy, with a low around 39. Breezy, with a west southwest wind 10 to 20 mph becoming north after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 20%.

    Low: 39 °F

    Slight Chance
    Showers and
    Breezy then
    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 64. North northwest wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 64 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 46. Southwest wind 13 to 16 mph, with gusts as high as 26 mph.

    Low: 46 °F

    Increasing
    Clouds

  • Monday

    Monday: A slight chance of showers after 1pm. Partly sunny, with a high near 60. Breezy, with a west southwest wind 15 to 21 mph becoming north northwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 20%.

    High: 60 °F

    Breezy.
    Partly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32. North northwest wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 26 mph.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 49. North northwest wind 7 to 15 mph, with gusts as high as 23 mph.

    High: 49 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 29. North northwest wind 6 to 11 mph becoming light north in the evening. Winds could gust as high as 20 mph.

    Low: 29 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers after 1pm. Partly sunny, with a high near 51. Light west northwest wind becoming northwest 6 to 11 mph in the morning. Chance of precipitation is 20%.

    High: 51 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 31. North northwest wind 5 to 9 mph becoming calm in the evening.

    Low: 31 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of showers between 8pm and 10pm. Mostly cloudy, with a low around 39. Breezy, with a west southwest wind 10 to 20 mph becoming north after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 64. North northwest wind 10 to 15 mph, with gusts as high as 23 mph.
Sunday Night
Increasing clouds, with a low around 46. Southwest wind 13 to 16 mph, with gusts as high as 26 mph.
Monday
A slight chance of showers after 1pm. Partly sunny, with a high near 60. Breezy, with a west southwest wind 15 to 21 mph becoming north northwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 32. North northwest wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 26 mph.
Tuesday
Partly sunny, with a high near 49. North northwest wind 7 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 29. North northwest wind 6 to 11 mph becoming light north in the evening. Winds could gust as high as 20 mph.
Wednesday
A slight chance of showers after 1pm. Partly sunny, with a high near 51. Light west northwest wind becoming northwest 6 to 11 mph in the morning. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 31. North northwest wind 5 to 9 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 59.
Thursday Night
Partly cloudy, with a low around 36.
Friday
Mostly sunny, with a high near 65.
Friday Night
Partly cloudy, with a low around 39.
Saturday
Mostly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Castlewood SD
 44.72°N 96.96°W (Elev. 1749 ft)
Last Update:
6:36 pm CDT May 2, 2026
Forecast Valid:
6pm CDT May 2, 2026-6pm CDT May 9, 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