Heavy Rain in the Southern U.S.; Winter Storm to Impact the Northern Mid-Atlantic and Interior Northeast

A storm system stretching from the Tennessee Valley to the Gulf Coast will bring a variety of hazards to the Eastern U.S. through Tuesday. On the south side of the system, heavy rain and thunderstorms will persist across the Southern U.S. Further north, a wintry precipitation mix is expected from the Central Appalachians to the interior Northeast through Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

-2°F

-19°C

Humidity 83%
Wind Speed S 5 mph
Barometer 29.77 in (1012.4 mb)
Dewpoint -6°F (-21°C)
Visibility 10.00 mi
Wind Chill-13°F (-25°C)
Last update 2 Dec 5:53 am CST
Extended Forecast for

4 Miles W Vienna SD

  • Today

    Today: A slight chance of snow after 3pm.  Increasing clouds, with a high near 27. South southwest wind 6 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 20%.

    High: 27 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Tonight

    Tonight: A chance of snow, mainly before 11pm.  Mostly cloudy, with a low around 5. West southwest wind 8 to 16 mph becoming north after midnight. Winds could gust as high as 26 mph.  Chance of precipitation is 30%.

    Low: 5 °F

    Chance Snow
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 1 by 5pm. North wind 8 to 16 mph, with gusts as high as 26 mph.

    High: 11 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around -10. Wind chill values as low as -21. Northwest wind 5 to 10 mph becoming south after midnight.

    Low: -10 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 23. South wind 11 to 17 mph, with gusts as high as 29 mph.

    High: 23 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 15. West wind 8 to 13 mph, with gusts as high as 21 mph.

    Low: 15 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of snow before noon.  Mostly cloudy, with a high near 28. West northwest wind 8 to 13 mph, with gusts as high as 21 mph.  Chance of precipitation is 20%.

    High: 28 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 8. Northwest wind 7 to 11 mph becoming east northeast after midnight.

    Low: 8 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of snow.  Mostly cloudy, with a high near 17. East wind 9 to 13 mph, with gusts as high as 21 mph.  Chance of precipitation is 30%.

    High: 17 °F

    Chance Snow

Detailed Forecast

Today
A slight chance of snow after 3pm. Increasing clouds, with a high near 27. South southwest wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Tonight
A chance of snow, mainly before 11pm. Mostly cloudy, with a low around 5. West southwest wind 8 to 16 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 30%.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 1 by 5pm. North wind 8 to 16 mph, with gusts as high as 26 mph.
Wednesday Night
Mostly clear, with a low around -10. Wind chill values as low as -21. Northwest wind 5 to 10 mph becoming south after midnight.
Thursday
Mostly sunny, with a high near 23. South wind 11 to 17 mph, with gusts as high as 29 mph.
Thursday Night
Mostly cloudy, with a low around 15. West wind 8 to 13 mph, with gusts as high as 21 mph.
Friday
A slight chance of snow before noon. Mostly cloudy, with a high near 28. West northwest wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 8. Northwest wind 7 to 11 mph becoming east northeast after midnight.
Saturday
A chance of snow. Mostly cloudy, with a high near 17. East wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Saturday Night
A slight chance of snow. Mostly cloudy, with a low around 0. Chance of precipitation is 20%.
Sunday
Mostly cloudy, with a high near 13.
Sunday Night
Mostly cloudy, with a low around 7.
Monday
Partly sunny, with a high near 28.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Vienna SD
 44.69°N 97.59°W (Elev. 1759 ft)
5:36 am CST Dec 2, 2025
5am CST Dec 2, 2025-6pm CST Dec 8, 2025
 
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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