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

24°F

-4°C

Humidity 84%
Wind Speed S 14 mph
Barometer 29.68 in (1008.2 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill12°F (-11°C)
Last update 17 Mar 9:53 pm CDT
Extended Forecast for

Vienna SD

  • Tonight

    Tonight: Partly cloudy, with a low around 22. South southwest wind around 10 mph becoming west after midnight.

    Low: 22 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 44. West southwest wind 9 to 11 mph.

    High: 44 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 31. Southwest wind 8 to 10 mph becoming northwest after midnight.

    Low: 31 °F

    Partly Cloudy

  • Thursday

    Thursday: Patchy fog before noon. Otherwise, mostly sunny, with a high near 52. North northwest wind 8 to 10 mph becoming southwest in the afternoon.

    High: 52 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 38. South southwest wind around 10 mph.

    Low: 38 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 65. West northwest wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 65 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42. West northwest wind around 10 mph becoming south after midnight.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 70. West wind 13 to 17 mph, with gusts as high as 26 mph.

    High: 70 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain and snow after 1am. Mostly cloudy, with a low around 33. North wind 15 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 33 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 22. South southwest wind around 10 mph becoming west after midnight.
Wednesday
Partly sunny, with a high near 44. West southwest wind 9 to 11 mph.
Wednesday Night
Partly cloudy, with a low around 31. Southwest wind 8 to 10 mph becoming northwest after midnight.
Thursday
Patchy fog before noon. Otherwise, mostly sunny, with a high near 52. North northwest wind 8 to 10 mph becoming southwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 38. South southwest wind around 10 mph.
Friday
Mostly sunny, with a high near 65. West northwest wind 10 to 15 mph, with gusts as high as 23 mph.
Friday Night
Partly cloudy, with a low around 42. West northwest wind around 10 mph becoming south after midnight.
Saturday
Mostly sunny, with a high near 70. West wind 13 to 17 mph, with gusts as high as 26 mph.
Saturday Night
A slight chance of rain and snow after 1am. Mostly cloudy, with a low around 33. North wind 15 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 44.
Sunday Night
Partly cloudy, with a low around 22.
Monday
Partly sunny, with a high near 44.
Monday Night
Mostly cloudy, with a low around 28.
Tuesday
A slight chance of rain and snow. Partly sunny, with a high near 48. Chance of precipitation is 20%.
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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:
9:36 pm CDT Mar 17, 2026
Forecast Valid:
10pm CDT Mar 17, 2026-6pm CDT Mar 24, 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