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 >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

72°F

22°C

Humidity 91%
Wind Speed SE 5 mph
Barometer 29.95 in (1012.7 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 5 Sep 4:53 am CDT
Extended Forecast for

Clark SDSimilar City Names

  • Overnight

    Overnight: Showers and thunderstorms likely.  Mostly cloudy, with a low around 68. Southeast wind around 14 mph, with gusts as high as 24 mph.  Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    T-storms
    Likely

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly before 10am.  Mostly cloudy through mid morning, then gradual clearing, with a high near 86. Southeast wind 14 to 16 mph, with gusts as high as 25 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    T-storms
    Likely then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms between 9pm and 10pm.  Increasing clouds, with a low around 69. Southeast wind 10 to 13 mph, with gusts as high as 21 mph.  Chance of precipitation is 20%.

    Low: 69 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly between 2pm and 3pm.  Partly sunny, then gradually becoming sunny, with a high near 83. East southeast wind 13 to 16 mph, with gusts as high as 25 mph.  Chance of precipitation is 40%.

    High: 83 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, mainly after 1am.  Mostly cloudy, with a low around 68. South southeast wind 13 to 16 mph, with gusts as high as 25 mph.  Chance of precipitation is 40%.

    Low: 68 °F

    Chance
    Showers then
    Chance
    T-storms

  • Labor Day

    Labor Day: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 4pm, then a chance of showers and thunderstorms after 4pm.  Partly sunny, with a high near 84. Breezy, with a south wind 17 to 23 mph, with gusts as high as 34 mph.  Chance of precipitation is 50%.

    High: 84 °F

    Chance
    Showers and
    Breezy

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 1am.  Mostly cloudy, with a low around 68. Breezy, with a south wind 18 to 23 mph, with gusts as high as 36 mph.  Chance of precipitation is 60%.

    Low: 68 °F

    Showers
    Likely and
    Breezy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81. South southwest wind around 16 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58. West northwest wind 7 to 10 mph.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Overnight
Showers and thunderstorms likely. Mostly cloudy, with a low around 68. Southeast wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and thunderstorms likely, mainly before 10am. Mostly cloudy through mid morning, then gradual clearing, with a high near 86. Southeast wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A slight chance of showers and thunderstorms between 9pm and 10pm. Increasing clouds, with a low around 69. Southeast wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Sunday
A chance of showers and thunderstorms, mainly between 2pm and 3pm. Partly sunny, then gradually becoming sunny, with a high near 83. East southeast wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 68. South southeast wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Labor Day
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 84. Breezy, with a south wind 17 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 50%.
Monday Night
Showers likely and possibly a thunderstorm before 1am. Mostly cloudy, with a low around 68. Breezy, with a south wind 18 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 81. South southwest wind around 16 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph.
Tuesday Night
Mostly clear, with a low around 58. West northwest wind 7 to 10 mph.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 59. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Clark SDSimilar City Names
 44.88°N 97.75°W (Elev. 1808 ft)
4:21 am CDT Sep 5, 2026
5am CDT Sep 5, 2026-6pm CDT Sep 11, 2026
 
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