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

Late January Extreme Cold; Watching for Another East Coast Storm Threat This Weekend

Well below normal temperatures will continue for the eastern half of the Lower 48 this week. Another blast of arctic air will spread from the Plains through the East/Southeast Friday into Saturday with more record lows expected even into Florida. Forecasts are being monitored for increasing potential of another significant winter storm to impact the eastern United States this coming weekend. Read More >

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

8°F

-13°C

Humidity 66%
Wind Speed NW 18 G 30 mph
Barometer 30.01 in (1020.5 mb)
Dewpoint -1°F (-18°C)
Visibility 10.00 mi
Wind Chill-11°F (-24°C)
Last update 26 Jan 11:53 pm CST
Extended Forecast for

Watertown SD

  • Overnight

    Overnight: Partly cloudy, with a low around -4. Wind chill values as low as -20. Northwest wind 16 to 18 mph, with gusts as high as 29 mph.

    Low: -4 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny and cold, with a high near 7. Wind chill values as low as -23. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 7 °F

    Cold

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around -2. West wind 6 to 9 mph.

    Low: -2 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 12. North northwest wind 6 to 9 mph.

    High: 12 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -8. North wind 3 to 6 mph.

    Low: -8 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny and cold, with a high near 9. North wind 5 to 8 mph.

    High: 9 °F

    Cold

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -13. North northeast wind 6 to 8 mph.

    Low: -13 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and cold, with a high near 5. North wind 6 to 8 mph.

    High: 5 °F

    Cold

  • Friday Night

    Friday Night: Mostly clear, with a low around -7. North northwest wind 6 to 9 mph becoming south after midnight.

    Low: -7 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around -4. Wind chill values as low as -20. Northwest wind 16 to 18 mph, with gusts as high as 29 mph.
Tuesday
Sunny and cold, with a high near 7. Wind chill values as low as -23. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Increasing clouds, with a low around -2. West wind 6 to 9 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 12. North northwest wind 6 to 9 mph.
Wednesday Night
Partly cloudy, with a low around -8. North wind 3 to 6 mph.
Thursday
Mostly sunny and cold, with a high near 9. North wind 5 to 8 mph.
Thursday Night
Partly cloudy, with a low around -13. North northeast wind 6 to 8 mph.
Friday
Sunny and cold, with a high near 5. North wind 6 to 8 mph.
Friday Night
Mostly clear, with a low around -7. North northwest wind 6 to 9 mph becoming south after midnight.
Saturday
A slight chance of snow after noon. Mostly sunny, with a high near 20. Chance of precipitation is 20%.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 13. Chance of precipitation is 30%.
Sunday
Partly sunny, with a high near 31.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Partly sunny, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Watertown SD
 44.91°N 97.14°W (Elev. 1736 ft)
Last Update:
11:26 pm CST Jan 26, 2026
Forecast Valid:
12am CST Jan 27, 2026-6pm CST Feb 2, 2026
 
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Additional Resources

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Chance of Precipitation