Severe Thunderstorms in the Ohio Valley and Mid-Atlantic; Heat Continuing in the Central U.S.

Widespread strong to severe thunderstorms are expected from the Upper Ohio Valley into the Mid-Atlantic through Friday, with damaging winds as the primary threat. Dangerous heat will continue from the South-Central U.S. to the Midwest, Ohio/Tennessee valleys, and Mid-Atlantic. Widespread Major to Extreme Heat Risk is forecast into the weekend and will confine to the South-Central U.S. by Labor Day Read More >

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

67°F

19°C

Humidity 97%
Wind Speed Calm
Barometer 29.84 in (1009.1 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 4 Sep 2:53 am CDT
Extended Forecast for

3 Miles ESE Watertown Municipal Airport SD

  • Overnight

    Overnight: Mostly clear, with a low around 66. Northeast wind 3 to 5 mph.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 90. Northeast wind 6 to 10 mph.

    High: 90 °F

    Hot

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms between 3am and 4am.  Partly cloudy, with a low around 69. East southeast wind around 9 mph.  Chance of precipitation is 20%.

    Low: 69 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before noon, then a slight chance of showers between noon and 1pm.  Partly sunny, then gradually becoming sunny and hot, with a high near 90. Southeast wind 9 to 13 mph, with gusts as high as 22 mph.  Chance of precipitation is 40%.

    High: 90 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 7pm, then a chance of showers after 1am.  Partly cloudy, with a low around 69. Southeast wind 7 to 10 mph.  Chance of precipitation is 40%.

    Low: 69 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 4pm.  Mostly sunny, with a high near 86. Southeast wind 8 to 13 mph, with gusts as high as 21 mph.  Chance of precipitation is 50%.

    High: 86 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 67. Southeast wind 8 to 11 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

  • Labor Day

    Labor Day: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm.  Mostly cloudy, with a high near 84. South southeast wind 10 to 17 mph, with gusts as high as 29 mph.  Chance of precipitation is 60%.

    High: 84 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 70. Breezy, with a south wind 15 to 20 mph, with gusts as high as 32 mph.  Chance of precipitation is 50%.

    Low: 70 °F

    Chance
    T-storms and
    Breezy

Detailed Forecast

Overnight
Mostly clear, with a low around 66. Northeast wind 3 to 5 mph.
Friday
Sunny and hot, with a high near 90. Northeast wind 6 to 10 mph.
Friday Night
A slight chance of showers and thunderstorms between 3am and 4am. Partly cloudy, with a low around 69. East southeast wind around 9 mph. Chance of precipitation is 20%.
Saturday
A chance of showers and thunderstorms before noon, then a slight chance of showers between noon and 1pm. Partly sunny, then gradually becoming sunny and hot, with a high near 90. Southeast wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Saturday Night
A slight chance of showers and thunderstorms before 7pm, then a chance of showers after 1am. Partly cloudy, with a low around 69. Southeast wind 7 to 10 mph. Chance of precipitation is 40%.
Sunday
A chance of showers, with thunderstorms also possible after 4pm. Mostly sunny, with a high near 86. Southeast wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Southeast wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Labor Day
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. South southeast wind 10 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Breezy, with a south wind 15 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 50%.
Tuesday
Partly sunny, with a high near 85.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 57. Chance of precipitation is 20%.
Thursday
A slight chance of showers. Mostly sunny, with a high near 76. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Watertown Municipal Airport SD
 44.91°N 97.11°W (Elev. 1752 ft)
3:21 am CDT Sep 4, 2026
3am CDT Sep 4, 2026-6pm CDT Sep 10, 2026
 
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