National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

A Few Clouds and Breezy

79°F

26°C

Humidity 58%
Wind Speed SE 22 G 33 mph
Barometer 29.74 in (1006.2 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 27 Jun 5:53 pm CDT
Extended Forecast for

4 Miles ESE Castlewood SD

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 67. Breezy, with a southeast wind 14 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Breezy.
    Mostly Cloudy
    then Showers

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly before 1pm. Cloudy, then gradually becoming mostly sunny and hot, with a high near 90. South southeast wind 10 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Showers
    Likely then
    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 71. East southeast wind 5 to 9 mph.

    Low: 71 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly cloudy, then gradually becoming sunny and hot, with a high near 95. Breezy, with a southeast wind 14 to 23 mph becoming southwest in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 20%.

    High: 95 °F

    Breezy.
    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers after 1am. Mostly clear, with a low around 67. West southwest wind 8 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    Low: 67 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers before 1pm. Sunny and hot, with a high near 90. West southwest wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 90 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 65. West wind 5 to 9 mph becoming southeast after midnight. Chance of precipitation is 40%.

    Low: 65 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny and hot, with a high near 91. South southeast wind 7 to 10 mph. Chance of precipitation is 40%.

    High: 91 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 67. South wind 6 to 9 mph. Chance of precipitation is 50%.

    Low: 67 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 67. Breezy, with a southeast wind 14 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and thunderstorms likely, mainly before 1pm. Cloudy, then gradually becoming mostly sunny and hot, with a high near 90. South southeast wind 10 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Mostly clear, with a low around 71. East southeast wind 5 to 9 mph.
Monday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly cloudy, then gradually becoming sunny and hot, with a high near 95. Breezy, with a southeast wind 14 to 23 mph becoming southwest in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 20%.
Monday Night
A slight chance of showers after 1am. Mostly clear, with a low around 67. West southwest wind 8 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Tuesday
A slight chance of showers before 1pm. Sunny and hot, with a high near 90. West southwest wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 65. West wind 5 to 9 mph becoming southeast after midnight. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny and hot, with a high near 91. South southeast wind 7 to 10 mph. Chance of precipitation is 40%.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 67. South wind 6 to 9 mph. Chance of precipitation is 50%.
Thursday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 93. Chance of precipitation is 20%.
Thursday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 69. Chance of precipitation is 60%.
Friday
Mostly sunny and hot, with a high near 95.
Friday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 72. Chance of precipitation is 30%.
Independence Day
A slight chance of showers and thunderstorms. Mostly sunny and hot, with a high near 95. Chance of precipitation is 20%.
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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 Jun 27, 2026
Forecast Valid:
5pm CDT Jun 27, 2026-6pm CDT Jul 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation