Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

-1°F

-18°C

Humidity 72%
Wind Speed W 5 mph
Barometer 30.16 in (1026.7 mb)
Dewpoint -8°F (-22°C)
Visibility 10.00 mi
Wind Chill-12°F (-24°C)
Last update 19 Jan 7:53 pm CST
Extended Forecast for

Watertown SD

  • Tonight

    Tonight: Mostly clear, with a low around -12. Wind chill values as low as -23. West northwest wind 3 to 6 mph.

    Low: -12 °F

    Mostly Clear

  • Tuesday

    Tuesday: Snow, mainly after noon.  High near 16. Southwest wind 6 to 9 mph becoming south southeast in the afternoon.  Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 16 °F

    Partly Sunny
    then Snow

  • Tuesday Night

    Tuesday Night: Snow, mainly before 9pm.  Low around 8. South southeast wind 5 to 10 mph becoming west northwest in the evening. Winds could gust as high as 21 mph.  Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 8 °F

    Snow then
    Mostly Cloudy

  • Wednesday

    Wednesday: Snow likely, mainly before noon.  Patchy blowing snow between noon and 5pm. Partly sunny, with a high near 21. Blustery, with a west southwest wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 33 mph.  Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 21 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 0. West northwest wind 10 to 17 mph, with gusts as high as 29 mph.

    Low: 0 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny and cold, with a high near 8. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 8 °F

    Cold

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -24. North northwest wind 6 to 13 mph.

    Low: -24 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and cold, with a high near -12. Northwest wind 6 to 8 mph.

    High: -12 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around -23. Northwest wind around 6 mph becoming south after midnight.

    Low: -23 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around -12. Wind chill values as low as -23. West northwest wind 3 to 6 mph.
Tuesday
Snow, mainly after noon. High near 16. Southwest wind 6 to 9 mph becoming south southeast in the afternoon. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Tuesday Night
Snow, mainly before 9pm. Low around 8. South southeast wind 5 to 10 mph becoming west northwest in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Wednesday
Snow likely, mainly before noon. Patchy blowing snow between noon and 5pm. Partly sunny, with a high near 21. Blustery, with a west southwest wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Wednesday Night
Partly cloudy, with a low around 0. West northwest wind 10 to 17 mph, with gusts as high as 29 mph.
Thursday
Partly sunny and cold, with a high near 8. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Partly cloudy, with a low around -24. North northwest wind 6 to 13 mph.
Friday
Sunny and cold, with a high near -12. Northwest wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around -23. Northwest wind around 6 mph becoming south after midnight.
Saturday
Mostly sunny and cold, with a high near 1.
Saturday Night
Partly cloudy, with a low around -9.
Sunday
Mostly sunny, with a high near 12.
Sunday Night
Partly cloudy, with a low around -3.
Monday
Mostly sunny, with a high near 15.
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ABOUT THIS FORECAST

 
Point Forecast:
Watertown SD
 44.91°N 97.14°W (Elev. 1736 ft)
7:51 pm CST Jan 19, 2026
8pm CST Jan 19, 2026-6pm CST Jan 26, 2026
 
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Additional Resources

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Hourly Weather Forecast

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