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

29°F

-2°C

Humidity 75%
Wind Speed NW 13 mph
Barometer 30.10 in (1020.7 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 9 Apr 6:53 am CDT
Extended Forecast for

Vienna SD

  • Today

    Today: Snow likely before 5pm, then a chance of rain and snow. Increasing clouds, with a high near 42. West northwest wind 3 to 8 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 42 °F

    Mostly Sunny
    then
    Rain/Snow
    Likely

  • Tonight

    Tonight: A chance of rain and snow before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 23. North wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 30%.

    Low: 23 °F

    Chance
    Rain/Snow
    then Partly
    Cloudy

  • Friday

    Friday: Partly sunny, then gradually becoming sunny, with a high near 54. South wind 3 to 6 mph.

    High: 54 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: A slight chance of rain after 1am. Increasing clouds, with a low around 39. Southeast wind 7 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 39 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Saturday

    Saturday: Rain likely, mainly before 1pm. Cloudy, with a high near 61. Breezy, with a south southeast wind 18 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Rain Likely
    and Breezy

  • Saturday Night

    Saturday Night: A chance of rain. Mostly cloudy, with a low around 54. Breezy, with a south southeast wind around 23 mph, with gusts as high as 34 mph. Chance of precipitation is 40%.

    Low: 54 °F

    Chance Rain
    and Breezy

  • Sunday

    Sunday: A chance of rain. Mostly sunny, with a high near 76. Breezy, with a south wind 20 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 30%.

    High: 76 °F

    Chance Rain
    and Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47. West wind 10 to 15 mph becoming northeast after midnight.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: A chance of rain, mainly after 1pm. Partly sunny, with a high near 66. Northeast wind 10 to 16 mph. Chance of precipitation is 50%.

    High: 66 °F

    Slight Chance
    Rain then
    Chance Rain

Detailed Forecast

Today
Snow likely before 5pm, then a chance of rain and snow. Increasing clouds, with a high near 42. West northwest wind 3 to 8 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Tonight
A chance of rain and snow before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 23. North wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 30%.
Friday
Partly sunny, then gradually becoming sunny, with a high near 54. South wind 3 to 6 mph.
Friday Night
A slight chance of rain after 1am. Increasing clouds, with a low around 39. Southeast wind 7 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Saturday
Rain likely, mainly before 1pm. Cloudy, with a high near 61. Breezy, with a south southeast wind 18 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 54. Breezy, with a south southeast wind around 23 mph, with gusts as high as 34 mph. Chance of precipitation is 40%.
Sunday
A chance of rain. Mostly sunny, with a high near 76. Breezy, with a south wind 20 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 30%.
Sunday Night
Mostly clear, with a low around 47. West wind 10 to 15 mph becoming northeast after midnight.
Monday
A chance of rain, mainly after 1pm. Partly sunny, with a high near 66. Northeast wind 10 to 16 mph. Chance of precipitation is 50%.
Monday Night
A chance of rain. Mostly cloudy, with a low around 37. Chance of precipitation is 50%.
Tuesday
A chance of rain. Mostly cloudy, with a high near 47. Chance of precipitation is 50%.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.
Wednesday
A chance of rain and snow. Partly sunny, with a high near 54. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Vienna SD
 44.71°N 97.5°W (Elev. 1801 ft)
Last Update:
6:36 am CDT Apr 9, 2026
Forecast Valid:
7am CDT Apr 9, 2026-6pm CDT Apr 15, 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