Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Light Snow Freezing Fog

20°F

-7°C

Humidity 89%
Wind Speed SW 15 mph
Barometer 29.71 in (1009.0 mb)
Dewpoint 17°F (-8°C)
Visibility 0.50 mi
Wind Chill6°F (-14°C)
Last update 21 Jan 9:53 am CST
Extended Forecast for

6 Miles WSW Watertown SD

Extreme Cold Watch January 22, 06:00pm until January 23, 03:00pm
Winter Weather Advisory until January 21, 06:00pm
Click here for hazard details and duration
Extreme Cold Watch
Winter Weather Advisory
  •  
    Winter Weather Advisory until January 21, 06:00pm

    NOW until 6:00pm Wed

    Winter Weather Advisory

  • Today

    High: 23 °F

    Snow and
    Patchy
    Blowing Snow

  • Tonight

    Tonight: Patchy blowing snow before 7pm. Mostly cloudy, with a low around 1. Blustery, with a west northwest wind 10 to 20 mph, with gusts as high as 33 mph.

    Low: 1 °F

    Patchy
    Blowing Snow
    and Blustery
    then Mostly
    Cloudy

  • Thursday

    Thursday: Patchy blowing snow between 1pm and 4pm. Partly sunny and cold, with a temperature falling to around -7 by 5pm. Wind chill values as low as -30. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 5 °F

    Partly Sunny
    then Patchy
    Blowing Snow
    and Blustery

  • Thursday Night

    Thursday Night: Mostly clear, with a low around -25. Wind chill values as low as -43. North northwest wind 8 to 16 mph, with gusts as high as 25 mph.

    Low: -25 °F

    Mostly Clear

  • Friday

    Friday: Sunny and cold, with a high near -12. Northwest wind 5 to 8 mph.

    High: -12 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around -22. Light and variable wind becoming south around 5 mph after midnight.

    Low: -22 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 0. South wind 6 to 9 mph.

    High: 0 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -15. South southeast wind around 7 mph becoming west northwest after midnight.

    Low: -15 °F

    Mostly Cloudy

Detailed Forecast

Today
Snow, mainly before noon. Patchy blowing snow. High near 23. Windy, with a west southwest wind 17 to 22 mph becoming northwest 25 to 30 mph in the afternoon. Winds could gust as high as 43 mph. Chance of precipitation is 90%. Total daytime snow accumulation of around an inch possible.
Tonight
Patchy blowing snow before 7pm. Mostly cloudy, with a low around 1. Blustery, with a west northwest wind 10 to 20 mph, with gusts as high as 33 mph.
Thursday
Patchy blowing snow between 1pm and 4pm. Partly sunny and cold, with a temperature falling to around -7 by 5pm. Wind chill values as low as -30. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Thursday Night
Mostly clear, with a low around -25. Wind chill values as low as -43. North northwest wind 8 to 16 mph, with gusts as high as 25 mph.
Friday
Sunny and cold, with a high near -12. Northwest wind 5 to 8 mph.
Friday Night
Partly cloudy, with a low around -22. Light and variable wind becoming south around 5 mph after midnight.
Saturday
Mostly sunny and cold, with a high near 0. South wind 6 to 9 mph.
Saturday Night
Mostly cloudy, with a low around -15. South southeast wind around 7 mph becoming west northwest after midnight.
Sunday
Mostly sunny and cold, with a high near 0. West wind 7 to 10 mph.
Sunday Night
Partly cloudy, with a low around -12.
Monday
Sunny, with a high near 17.
Monday Night
Partly cloudy, with a low around 1.
Tuesday
Partly sunny, with a high near 18.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles WSW Watertown SD
 44.88°N 97.26°W (Elev. 1749 ft)
9:36 am CST Jan 21, 2026
9am CST Jan 21, 2026-6pm CST Jan 27, 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