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.

Overcast

45°F

7°C

Humidity 44%
Wind Speed N 8 mph
Barometer 29.93 in (1014.8 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 6 May 7:53 pm CDT
Extended Forecast for

Vienna SD

  • Tonight

    Tonight: Mostly cloudy, with a low around 30. Northwest wind around 5 mph becoming calm.

    Low: 30 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 63. Light and variable wind becoming west northwest 6 to 11 mph in the morning.

    High: 63 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 36. West northwest wind 5 to 8 mph becoming light and variable.

    Low: 36 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 68. Southwest wind 9 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph.

    High: 68 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 41. West northwest wind 7 to 14 mph becoming southwest after midnight.

    Low: 41 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 65. West southwest wind 10 to 16 mph becoming north in the afternoon.

    High: 65 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 36. North wind 5 to 14 mph.

    Low: 36 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 62. North northwest wind 5 to 15 mph.

    High: 62 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 37. North wind 7 to 10 mph becoming southeast after midnight.

    Low: 37 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 30. Northwest wind around 5 mph becoming calm.
Thursday
Sunny, with a high near 63. Light and variable wind becoming west northwest 6 to 11 mph in the morning.
Thursday Night
Increasing clouds, with a low around 36. West northwest wind 5 to 8 mph becoming light and variable.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 68. Southwest wind 9 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph.
Friday Night
Partly cloudy, with a low around 41. West northwest wind 7 to 14 mph becoming southwest after midnight.
Saturday
Mostly cloudy, with a high near 65. West southwest wind 10 to 16 mph becoming north in the afternoon.
Saturday Night
Mostly cloudy, with a low around 36. North wind 5 to 14 mph.
Sunday
Sunny, with a high near 62. North northwest wind 5 to 15 mph.
Sunday Night
Partly cloudy, with a low around 37. North wind 7 to 10 mph becoming southeast after midnight.
Monday
Mostly sunny, with a high near 74.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 45. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 72. Breezy.
Tuesday Night
Partly cloudy, with a low around 43.
Wednesday
Mostly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Vienna SD
 44.71°N 97.5°W (Elev. 1801 ft)
Last Update:
7:46 pm CDT May 6, 2026
Forecast Valid:
8pm CDT May 6, 2026-6pm CDT May 13, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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