National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Winter Weather Across Portions of the Mid-Atlantic; Heavy Rain Along the Gulf Coast and Southeast

A storm system will continue to slowly move through the Gulf Coast and Southeast U.S. over the next couple of days, bringing a heavy rainfall threat through the weekend. Isolated instances of flooding may occur. On the north side of this storm system, colder air will support areas of mixed wintry precipitation and light snow from the Tennessee Valley to the Mid-Atlantic Friday. Read More >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Overcast

28°F

-2°C

Humidity 92%
Wind Speed SW 8 mph
Barometer 29.69 in (1007.9 mb)
Dewpoint 26°F (-3°C)
Visibility 9.00 mi
Wind Chill20°F (-7°C)
Last update 5 Dec 1:53 am CST
Extended Forecast for

3 Miles ESE Watertown Municipal Airport SD

  • Overnight

    Overnight: A chance of snow, mainly after 3am. Cloudy, with a steady temperature around 23. South southwest wind around 7 mph. Chance of precipitation is 40%.

    Low: 23 °F

    Chance Snow

  • Friday

    Friday: A chance of snow, mainly before 11am. Cloudy, with a high near 31. West southwest wind 5 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 50%.

    High: 31 °F

    Chance Snow
    then Slight
    Chance Snow

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 6. Northwest wind 8 to 13 mph becoming light north. Winds could gust as high as 22 mph.

    Low: 6 °F

    Mostly Cloudy

  • Saturday

    Saturday: Snow likely, mainly after noon. Cloudy, with a high near 15. East wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    High: 15 °F

    Chance Snow
    then Snow
    Likely

  • Saturday Night

    Saturday Night: A slight chance of snow before midnight. Mostly cloudy, with a low around -5. North northeast wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    Low: -5 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny and cold, with a high near 9. North wind 5 to 7 mph becoming south southeast in the afternoon.

    High: 9 °F

    Cold

  • Sunday Night

    Sunday Night: A slight chance of snow before midnight. Mostly cloudy, with a low around 1. South southeast wind 8 to 10 mph. Chance of precipitation is 20%.

    Low: 1 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 28. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 28 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 16. West wind 9 to 14 mph, with gusts as high as 23 mph.

    Low: 16 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of snow, mainly after 3am. Cloudy, with a steady temperature around 23. South southwest wind around 7 mph. Chance of precipitation is 40%.
Friday
A chance of snow, mainly before 11am. Cloudy, with a high near 31. West southwest wind 5 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 50%.
Friday Night
Mostly cloudy, with a low around 6. Northwest wind 8 to 13 mph becoming light north. Winds could gust as high as 22 mph.
Saturday
Snow likely, mainly after noon. Cloudy, with a high near 15. East wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
A slight chance of snow before midnight. Mostly cloudy, with a low around -5. North northeast wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Sunday
Partly sunny and cold, with a high near 9. North wind 5 to 7 mph becoming south southeast in the afternoon.
Sunday Night
A slight chance of snow before midnight. Mostly cloudy, with a low around 1. South southeast wind 8 to 10 mph. Chance of precipitation is 20%.
Monday
Partly sunny, with a high near 28. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Monday Night
Mostly cloudy, with a low around 16. West wind 9 to 14 mph, with gusts as high as 23 mph.
Tuesday
A chance of snow before noon, then a chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 50%.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 11. Chance of precipitation is 30%.
Wednesday
Mostly cloudy, with a high near 16.
Wednesday Night
A slight chance of snow. Mostly cloudy, with a low around 0. Chance of precipitation is 20%.
Thursday
A slight chance of snow. Mostly cloudy, with a high near 17. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Watertown Municipal Airport SD
 44.91°N 97.11°W (Elev. 1752 ft)
Last Update:
1:36 am CST Dec 5, 2025
Forecast Valid:
2am CST Dec 5, 2025-6pm CST Dec 11, 2025
 
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