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.

Partly Cloudy

70°F

21°C

Humidity 39%
Wind Speed NW 17 G 26 mph
Barometer 29.97 in (1014.3 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 19 Jun 6:53 pm CDT
Extended Forecast for

4 Miles WSW Vienna SD

  • Tonight

    Tonight: Mostly clear, with a low around 48. Northwest wind 13 to 18 mph becoming light north after midnight. Winds could gust as high as 28 mph.

    Low: 48 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 75. Light and variable wind becoming east northeast around 6 mph in the morning.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers before 3am, then a slight chance of showers after 4am. Increasing clouds, with a low around 55. East wind 7 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 55 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after 1pm. Cloudy, with a high near 67. East wind 15 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 67 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers, mainly before 1am. Mostly cloudy, with a low around 52. Northeast wind 8 to 13 mph. Chance of precipitation is 30%.

    Low: 52 °F

    Chance
    Showers

  • Monday

    Monday: A slight chance of showers before 1pm. Partly sunny, with a high near 72. Northeast wind around 7 mph becoming south southeast in the afternoon. Chance of precipitation is 20%.

    High: 72 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 54. South southeast wind 6 to 8 mph. Chance of precipitation is 60%.

    Low: 54 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 72. West wind 10 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.

    High: 72 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 51. Northwest wind 7 to 16 mph.

    Low: 51 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 48. Northwest wind 13 to 18 mph becoming light north after midnight. Winds could gust as high as 28 mph.
Saturday
Sunny, with a high near 75. Light and variable wind becoming east northeast around 6 mph in the morning.
Saturday Night
A slight chance of showers before 3am, then a slight chance of showers after 4am. Increasing clouds, with a low around 55. East wind 7 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Sunday
Showers likely, mainly after 1pm. Cloudy, with a high near 67. East wind 15 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A chance of showers, mainly before 1am. Mostly cloudy, with a low around 52. Northeast wind 8 to 13 mph. Chance of precipitation is 30%.
Monday
A slight chance of showers before 1pm. Partly sunny, with a high near 72. Northeast wind around 7 mph becoming south southeast in the afternoon. Chance of precipitation is 20%.
Monday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 54. South southeast wind 6 to 8 mph. Chance of precipitation is 60%.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 72. West wind 10 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.
Tuesday Night
Mostly clear, with a low around 51. Northwest wind 7 to 16 mph.
Wednesday
Mostly sunny, with a high near 72.
Wednesday Night
Partly cloudy, with a low around 51.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 55. Chance of precipitation is 20%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 77. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Vienna SD
 44.69°N 97.56°W (Elev. 1781 ft)
Last Update:
6:36 pm CDT Jun 19, 2026
Forecast Valid:
7pm CDT Jun 19, 2026-6pm CDT Jun 26, 2026
 
Forecast Discussion
 
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Additional Resources

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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