Another Arctic Blast in the East; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the upper Ohio Valley, Mid-Atlantic, Gulf Coast and Southeast U.S. this weekend. A rapidly deepening storm will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia into Sunday. Storm-force winds and coastal flooding will be possible along the East Coast. Read More >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Light Snow Fog/Mist

21°F

-6°C

Humidity 88%
Wind Speed S 9 mph
Barometer 29.94 in (1016.5 mb)
Dewpoint 18°F (-8°C)
Visibility 4.00 mi
Wind Chill11°F (-12°C)
Last update 1 Feb 1:53 am CST
Extended Forecast for

Watertown SD

  • Overnight

    Overnight: A chance of snow, mainly before 4am.  Cloudy, with a low around 17. Southwest wind around 15 mph.  Chance of precipitation is 40%.

    Low: 17 °F

    Chance Snow

  • Sunday

    Sunday: Mostly cloudy, with a high near 32. Northwest wind 11 to 17 mph, with gusts as high as 26 mph.

    High: 32 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 8. North northwest wind 5 to 10 mph becoming light north  after midnight.

    Low: 8 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of snow after noon.  Partly sunny, with a high near 20. East northeast wind around 6 mph.  Chance of precipitation is 20%.

    High: 20 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Monday Night

    Monday Night: A chance of snow, mainly before midnight.  Mostly cloudy, with a low around 7. East northeast wind 3 to 6 mph.  Chance of precipitation is 30%.

    Low: 7 °F

    Chance Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 22. Light and variable wind.

    High: 22 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 13. West wind 3 to 7 mph.

    Low: 13 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 28. Northwest wind 7 to 10 mph.

    High: 28 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 19. South southwest wind 7 to 13 mph, with gusts as high as 21 mph.

    Low: 19 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of snow, mainly before 4am. Cloudy, with a low around 17. Southwest wind around 15 mph. Chance of precipitation is 40%.
Sunday
Mostly cloudy, with a high near 32. Northwest wind 11 to 17 mph, with gusts as high as 26 mph.
Sunday Night
Mostly cloudy, with a low around 8. North northwest wind 5 to 10 mph becoming light north after midnight.
Monday
A slight chance of snow after noon. Partly sunny, with a high near 20. East northeast wind around 6 mph. Chance of precipitation is 20%.
Monday Night
A chance of snow, mainly before midnight. Mostly cloudy, with a low around 7. East northeast wind 3 to 6 mph. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 22. Light and variable wind.
Tuesday Night
Mostly cloudy, with a low around 13. West wind 3 to 7 mph.
Wednesday
Partly sunny, with a high near 28. Northwest wind 7 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 19. South southwest wind 7 to 13 mph, with gusts as high as 21 mph.
Thursday
Mostly sunny, with a high near 40.
Thursday Night
Partly cloudy, with a low around 21.
Friday
Partly sunny, with a high near 29.
Friday Night
Partly cloudy, with a low around 9.
Saturday
Mostly sunny, with a high near 29.
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ABOUT THIS FORECAST

 
Point Forecast:
Watertown SD
 44.91°N 97.14°W (Elev. 1736 ft)
1:51 am CST Feb 1, 2026
2am CST Feb 1, 2026-6pm CST Feb 7, 2026
 
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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