Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

75°F

24°C

Humidity 76%
Wind Speed E 7 mph
Barometer 29.93 in (1012.4 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 4 Sep 8:53 pm CDT
Extended Forecast for

4 Miles SSW Watertown SD

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly after 4am.  Partly cloudy, with a low around 69. East southeast wind 5 to 11 mph, with gusts as high as 20 mph.  Chance of precipitation is 30%.

    Low: 69 °F

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and 1pm.  Mostly sunny and hot, with a high near 90. East northeast wind 11 to 15 mph becoming southeast in the afternoon. Winds could gust as high as 24 mph.  Chance of precipitation is 50%.

    High: 90 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 70. Southeast wind 8 to 11 mph.

    Low: 70 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A chance of showers and thunderstorms.  Cloudy, then gradually becoming mostly sunny, with a high near 87. South southeast wind 9 to 13 mph, with gusts as high as 22 mph.  Chance of precipitation is 40%.

    High: 87 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 68. Southeast wind 11 to 13 mph, with gusts as high as 22 mph.  Chance of precipitation is 40%.

    Low: 68 °F

    Chance
    T-storms then
    Chance
    Showers

  • Labor Day

    Labor Day: A chance of showers, with thunderstorms also possible after 7am.  Partly sunny, with a high near 86. Breezy, with a south wind 15 to 21 mph, with gusts as high as 33 mph.  Chance of precipitation is 50%.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms and
    Breezy

  • Monday Night

    Monday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 70. Breezy, with a south wind 21 to 23 mph, with gusts as high as 36 mph.  Chance of precipitation is 50%.

    Low: 70 °F

    Chance
    T-storms and
    Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 85. South southwest wind 15 to 17 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph.

    High: 85 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60. West wind 7 to 10 mph.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers and thunderstorms, mainly after 4am. Partly cloudy, with a low around 69. East southeast wind 5 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and 1pm. Mostly sunny and hot, with a high near 90. East northeast wind 11 to 15 mph becoming southeast in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 50%.
Saturday Night
Increasing clouds, with a low around 70. Southeast wind 8 to 11 mph.
Sunday
A chance of showers and thunderstorms. Cloudy, then gradually becoming mostly sunny, with a high near 87. South southeast wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Southeast wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Labor Day
A chance of showers, with thunderstorms also possible after 7am. Partly sunny, with a high near 86. Breezy, with a south wind 15 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Breezy, with a south wind 21 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 50%.
Tuesday
Partly sunny, with a high near 85. South southwest wind 15 to 17 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph.
Tuesday Night
Mostly clear, with a low around 60. West wind 7 to 10 mph.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 57. Chance of precipitation is 20%.
Friday
A slight chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Watertown SD
 44.86°N 97.2°W (Elev. 1709 ft)
9:21 pm CDT Sep 4, 2026
9pm CDT Sep 4, 2026-6pm CDT Sep 11, 2026
 
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