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

65°F

18°C

Humidity 90%
Wind Speed N 3 mph
Barometer 29.80 in (1008.5 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 16 Jun 9:53 pm CDT
Extended Forecast for

6 Miles ENE Castlewood SD

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, increasing clouds, with a low around 58. North northwest wind 6 to 8 mph.

    Low: 58 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: A chance of showers, mainly after 2pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 76. North northeast wind 6 to 8 mph. Chance of precipitation is 30%.

    High: 76 °F

    Patchy Fog
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 57. North northeast wind 5 to 8 mph. Chance of precipitation is 20%.

    Low: 57 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 76. North wind 6 to 10 mph. Chance of precipitation is 30%.

    High: 76 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of thunderstorms before 7pm. Mostly clear, with a low around 58. West northwest wind 6 to 8 mph becoming southwest after midnight. Chance of precipitation is 10%.

    Low: 58 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 81. West wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 61. East southeast wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    Low: 61 °F

    Chance
    Showers

  • Friday

    Friday: A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. South southeast wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    High: 85 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 64. East southeast wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, increasing clouds, with a low around 58. North northwest wind 6 to 8 mph.
Tuesday
A chance of showers, mainly after 2pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 76. North northeast wind 6 to 8 mph. Chance of precipitation is 30%.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 57. North northeast wind 5 to 8 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 76. North wind 6 to 10 mph. Chance of precipitation is 30%.
Wednesday Night
A slight chance of thunderstorms before 7pm. Mostly clear, with a low around 58. West northwest wind 6 to 8 mph becoming southwest after midnight. Chance of precipitation is 10%.
Juneteenth
Sunny, with a high near 81. West wind 9 to 11 mph, with gusts as high as 20 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 61. East southeast wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Friday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. South southeast wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Friday Night
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 64. East southeast wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 71.
Sunday
Sunny, with a high near 89. Breezy.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 60. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 71. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ENE Castlewood SD
 44.74°N 96.9°W (Elev. 1850 ft)
Last Update:
9:47 pm CDT Jun 16, 2025
Forecast Valid:
10pm CDT Jun 16, 2025-6pm CDT Jun 23, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation