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

Heavy lake effect snow will continue in the Great Lakes into Wednesday before another storm brings a widespread general snow followed by another round of heavy lake effect snow. A wide-ranging winter storm will produce great swaths of heavy snow, sleet, and treacherous freezing rain from the southern Rockies/Plains and Mid-South starting Friday and shifting toward the East Coast through Sunday. Read More >

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Light Snow Fog/Mist

18°F

-8°C

Humidity 88%
Wind Speed SW 7 mph
Barometer 29.97 in (1019.1 mb)
Dewpoint 15°F (-9°C)
Visibility 2.00 mi
Wind Chill9°F (-13°C)
Last update 20 Jan 4:53 pm 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, 08:00am until January 21, 06:00pm
Click here for hazard details and duration
Extreme Cold Watch
Winter Weather Advisory
  • This Afternoon

    This Afternoon: A chance of snow.  Cloudy, with a high near 16. West southwest wind around 8 mph.  Chance of precipitation is 40%.

    High: 16 °F

    Chance Snow

  • Tonight

    Tonight: A slight chance of snow before 7pm.  Mostly cloudy, with a low around 6. West wind 8 to 11 mph, with gusts as high as 23 mph.  Chance of precipitation is 20%.

    Low: 6 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Wednesday

    Wednesday: Snow likely, mainly before 2pm.  Patchy blowing snow after 10am. Mostly cloudy, with a high near 21. Blustery, with a northwest wind 13 to 18 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 38 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: Patchy blowing snow before 7pm. Partly cloudy, with a low around -5. Wind chill values as low as -20. Blustery, with a west northwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 36 mph.

    Low: -5 °F

    Patchy
    Blowing Snow
    and Blustery
    then Partly
    Cloudy

  • Thursday

    Thursday: Partly sunny and cold, with a high near 4. Northwest wind 11 to 18 mph, with gusts as high as 30 mph.

    High: 4 °F

    Cold

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -25. North northwest wind 8 to 15 mph, with gusts as high as 25 mph.

    Low: -25 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and cold, with a high near -13. Northwest wind 6 to 8 mph.

    High: -13 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around -21. West wind 5 to 7 mph becoming south southwest after midnight.

    Low: -21 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near -3. South southwest wind 7 to 10 mph.

    High: -3 °F

    Cold

Detailed Forecast

This Afternoon
A chance of snow. Cloudy, with a high near 16. West southwest wind around 8 mph. Chance of precipitation is 40%.
Tonight
A slight chance of snow before 7pm. Mostly cloudy, with a low around 6. West wind 8 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Wednesday
Snow likely, mainly before 2pm. Patchy blowing snow after 10am. Mostly cloudy, with a high near 21. Blustery, with a northwest wind 13 to 18 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Wednesday Night
Patchy blowing snow before 7pm. Partly cloudy, with a low around -5. Wind chill values as low as -20. Blustery, with a west northwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 36 mph.
Thursday
Partly sunny and cold, with a high near 4. Northwest wind 11 to 18 mph, with gusts as high as 30 mph.
Thursday Night
Partly cloudy, with a low around -25. North northwest wind 8 to 15 mph, with gusts as high as 25 mph.
Friday
Sunny and cold, with a high near -13. Northwest wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around -21. West wind 5 to 7 mph becoming south southwest after midnight.
Saturday
Mostly sunny and cold, with a high near -3. South southwest wind 7 to 10 mph.
Saturday Night
Partly cloudy, with a low around -16.
Sunday
Mostly sunny and cold, with a high near 4.
Sunday Night
Partly cloudy, with a low around -8.
Monday
Mostly sunny, with a high near 15.
Monday Night
Mostly cloudy, with a low around 0.
Tuesday
Partly sunny, with a high near 16.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles S Ortley SD
 45.21°N 97.24°W (Elev. 1900 ft)
4:51 pm CST Jan 20, 2026
5pm CST Jan 20, 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