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 and Windy

17°F

-8°C

Humidity 77%
Wind Speed NW 28 G 44 mph
Barometer 29.93 in (1016.7 mb)
Dewpoint 11°F (-12°C)
Visibility 0.75 mi
Wind Chill-2°F (-19°C)
Last update 21 Jan 1:53 pm CST
Extended Forecast for

3 Miles ESE Watertown Municipal Airport SD

Extreme Cold Watch January 22, 06:00pm until January 23, 03:00pm
Winter Weather Advisory January 21, 02:45pm until January 21, 06:00pm
Click here for hazard details and duration
Extreme Cold Watch
Winter Weather Advisory
  •  
    Winter Weather Advisory January 21, 02:45pm until January 21, 06:00pm

    NOW until 6:00pm Wed

    Winter Weather Advisory

  • This Afternoon

    High: 24 °F

    Scattered
    Snow Showers
    and Patchy
    Blowing Snow

  • Tonight

    Tonight: Isolated snow showers.  Mostly cloudy, with a low around 1. West wind 10 to 18 mph, with gusts as high as 31 mph.  Chance of precipitation is 20%.

    Low: 1 °F

    Isolated Snow
    Showers

  • Thursday

    Thursday: Partly sunny and cold, with a temperature falling to around -6 by 5pm. Wind chill values as low as -29. Blustery, with a northwest wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 32 mph.

    High: 7 °F

    Partly Sunny
    then Partly
    Sunny and
    Blustery

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -23. Wind chill values as low as -40. North northwest wind 7 to 14 mph, with gusts as high as 24 mph.

    Low: -23 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and cold, with a high near -12. Northwest wind 5 to 7 mph.

    High: -12 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -19. Light and variable wind.

    Low: -19 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 1. South wind 3 to 7 mph.

    High: 1 °F

    Cold

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around -13. South southeast wind around 6 mph becoming north after midnight.

    Low: -13 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Scattered snow showers. Patchy blowing snow. Mostly cloudy, with a high near 24. Blustery, with a northwest wind 22 to 28 mph, with gusts as high as 40 mph. Chance of precipitation is 30%.
Tonight
Isolated snow showers. Mostly cloudy, with a low around 1. West wind 10 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Thursday
Partly sunny and cold, with a temperature falling to around -6 by 5pm. Wind chill values as low as -29. Blustery, with a northwest wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 32 mph.
Thursday Night
Partly cloudy, with a low around -23. Wind chill values as low as -40. North northwest wind 7 to 14 mph, with gusts as high as 24 mph.
Friday
Sunny and cold, with a high near -12. Northwest wind 5 to 7 mph.
Friday Night
Mostly cloudy, with a low around -19. Light and variable wind.
Saturday
Mostly sunny and cold, with a high near 1. South wind 3 to 7 mph.
Saturday Night
Partly cloudy, with a low around -13. South southeast wind around 6 mph becoming north after midnight.
Sunday
Partly sunny and cold, with a high near -2. North wind 6 to 8 mph.
Sunday Night
Partly cloudy, with a low around -17.
Monday
Mostly sunny, with a high near 12.
Monday Night
Partly cloudy, with a low around 0.
Tuesday
Partly sunny, with a high near 17.
Basemap Options
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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)
2:37 pm CST Jan 21, 2026
2pm 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