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.

Overcast

16°F

-9°C

Humidity 80%
Wind Speed W 8 mph
Barometer 29.87 in (1014.5 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill5°F (-15°C)
Last update 21 Jan 3:53 am CST
Extended Forecast for

9 Miles S Ortley SD

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

    Today: Snow, mainly before 2pm.  Patchy blowing snow after 8am. High near 22. Windy, with a west southwest wind 18 to 23 mph becoming northwest 26 to 31 mph in the afternoon. Winds could gust as high as 45 mph.  Chance of precipitation is 90%. Total daytime snow accumulation of around an inch possible.

    High: 22 °F

    Snow and
    Patchy
    Blowing Snow

  • Tonight

    Tonight: Patchy blowing snow before 8pm. Mostly cloudy, with a low around -2. Blustery, with a west northwest wind 13 to 21 mph, with gusts as high as 34 mph.

    Low: -2 °F

    Patchy
    Blowing Snow
    and Blustery
    then Mostly
    Cloudy

  • Thursday

    Thursday: Patchy blowing snow between noon and 5pm. Partly sunny and cold, with a temperature falling to around -9 by 5pm. Wind chill values as low as -33. Blustery, with a northwest wind 13 to 20 mph, with gusts as high as 32 mph.

    High: 4 °F

    Partly Sunny
    then Patchy
    Blowing Snow
    and Blustery

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -25. Wind chill values as low as -45. North northwest wind 9 to 17 mph, with gusts as high as 28 mph.

    Low: -25 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and cold, with a high near -14. West northwest wind 6 to 8 mph.

    High: -14 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around -21. West northwest wind around 6 mph becoming south after midnight.

    Low: -21 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near -3. South wind 6 to 9 mph.

    High: -3 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -16. South wind around 8 mph becoming west northwest after midnight.

    Low: -16 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny and cold, with a high near 0. West wind 8 to 10 mph.

    High: 0 °F

    Cold

Detailed Forecast

Today
Snow, mainly before 2pm. Patchy blowing snow after 8am. High near 22. Windy, with a west southwest wind 18 to 23 mph becoming northwest 26 to 31 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 90%. Total daytime snow accumulation of around an inch possible.
Tonight
Patchy blowing snow before 8pm. Mostly cloudy, with a low around -2. Blustery, with a west northwest wind 13 to 21 mph, with gusts as high as 34 mph.
Thursday
Patchy blowing snow between noon and 5pm. Partly sunny and cold, with a temperature falling to around -9 by 5pm. Wind chill values as low as -33. Blustery, with a northwest wind 13 to 20 mph, with gusts as high as 32 mph.
Thursday Night
Partly cloudy, with a low around -25. Wind chill values as low as -45. North northwest wind 9 to 17 mph, with gusts as high as 28 mph.
Friday
Sunny and cold, with a high near -14. West northwest wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around -21. West northwest wind around 6 mph becoming south after midnight.
Saturday
Mostly sunny and cold, with a high near -3. South wind 6 to 9 mph.
Saturday Night
Mostly cloudy, with a low around -16. South wind around 8 mph becoming west northwest after midnight.
Sunday
Mostly sunny and cold, with a high near 0. West wind 8 to 10 mph.
Sunday Night
Partly cloudy, with a low around -12.
Monday
Mostly sunny, with a high near 15.
Monday Night
Partly cloudy, with a low around 1.
Tuesday
Partly sunny, with a high near 16.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles S Ortley SD
 45.21°N 97.24°W (Elev. 1900 ft)
3:26 am CST Jan 21, 2026
4am CST Jan 21, 2026-6pm CST Jan 27, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database