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

59°F

15°C

Humidity 39%
Wind Speed S 12 mph
Barometer 30.17 in (1022.1 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 20 May 7:53 pm CDT
Extended Forecast for

Clark SDSimilar City Names

  • Tonight

    Tonight: Mostly cloudy, with a low around 41. South southeast wind 11 to 15 mph.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 65. South southeast wind 15 to 18 mph, with gusts as high as 28 mph.

    High: 65 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43. Southeast wind 15 to 17 mph, with gusts as high as 25 mph.

    Low: 43 °F

    Partly Cloudy

  • Friday

    Friday: Showers, with thunderstorms also possible after 4pm. High near 56. East southeast wind around 18 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 56 °F

    Showers
    Likely then
    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 41. East wind 10 to 15 mph becoming north northwest after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 41 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly cloudy, with a high near 65. West northwest wind around 11 mph.

    High: 65 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 43. Northwest wind 5 to 9 mph becoming southeast in the evening.

    Low: 43 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 77. South wind 11 to 13 mph.

    High: 77 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 51. South wind 8 to 15 mph.

    Low: 51 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 41. South southeast wind 11 to 15 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 65. South southeast wind 15 to 18 mph, with gusts as high as 28 mph.
Thursday Night
Partly cloudy, with a low around 43. Southeast wind 15 to 17 mph, with gusts as high as 25 mph.
Friday
Showers, with thunderstorms also possible after 4pm. High near 56. East southeast wind around 18 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 41. East wind 10 to 15 mph becoming north northwest after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly cloudy, with a high near 65. West northwest wind around 11 mph.
Saturday Night
Partly cloudy, with a low around 43. Northwest wind 5 to 9 mph becoming southeast in the evening.
Sunday
Sunny, with a high near 77. South wind 11 to 13 mph.
Sunday Night
Mostly clear, with a low around 51. South wind 8 to 15 mph.
Memorial Day
Sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 56. Breezy.
Tuesday
Sunny, with a high near 84. Breezy.
Tuesday Night
A slight chance of showers. Mostly clear, with a low around 56. Breezy. Chance of precipitation is 20%.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81. Breezy. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Clark SDSimilar City Names
 44.88°N 97.75°W (Elev. 1808 ft)
Last Update:
8:36 pm CDT May 20, 2026
Forecast Valid:
8pm CDT May 20, 2026-6pm CDT May 27, 2026
 
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Additional Resources

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Chance of Precipitation