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

-7°F

-22°C

Humidity 82%
Wind Speed Calm
Barometer 30.17 in (1026.9 mb)
Dewpoint -11°F (-24°C)
Visibility 10.00 mi
Last update 19 Jan 11:53 pm CST
Extended Forecast for

9 Miles S Ortley SD

  • Overnight

    Overnight: Partly cloudy, with a low around -12. Wind chill values as low as -19. West southwest wind around 7 mph.

    Low: -12 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Snow, mainly after noon.  High near 15. West southwest wind 6 to 9 mph becoming south southeast in the afternoon.  Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 15 °F

    Partly Sunny
    then Snow

  • Tuesday Night

    Tuesday Night: Snow likely, mainly before 9pm.  Mostly cloudy, with a low around 9. South wind 6 to 11 mph becoming west northwest in the evening. Winds could gust as high as 23 mph.  Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 9 °F

    Snow Likely
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Snow likely, mainly before noon.  Patchy blowing snow after 11am. Mostly cloudy, with a high near 21. Blustery, with a west southwest wind 13 to 22 mph becoming northwest in the afternoon. Winds could gust as high as 36 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: Mostly cloudy, with a low around -1. West northwest wind 11 to 18 mph, with gusts as high as 31 mph.

    Low: -1 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny and cold, with a high near 5. Northwest wind 11 to 16 mph, with gusts as high as 26 mph.

    High: 5 °F

    Cold

  • Thursday Night

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

    Low: -24 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -13. Northwest wind around 8 mph.

    High: -13 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around -23. West northwest wind around 7 mph becoming south southwest after midnight.

    Low: -23 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around -12. Wind chill values as low as -19. West southwest wind around 7 mph.
Tuesday
Snow, mainly after noon. High near 15. West southwest wind 6 to 9 mph becoming south southeast in the afternoon. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Tuesday Night
Snow likely, mainly before 9pm. Mostly cloudy, with a low around 9. South wind 6 to 11 mph becoming west northwest in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday
Snow likely, mainly before noon. Patchy blowing snow after 11am. Mostly cloudy, with a high near 21. Blustery, with a west southwest wind 13 to 22 mph becoming northwest in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Wednesday Night
Mostly cloudy, with a low around -1. West northwest wind 11 to 18 mph, with gusts as high as 31 mph.
Thursday
Partly sunny and cold, with a high near 5. Northwest wind 11 to 16 mph, with gusts as high as 26 mph.
Thursday Night
Partly cloudy, with a low around -24. North northwest wind 7 to 14 mph, with gusts as high as 23 mph.
Friday
Mostly sunny and cold, with a high near -13. Northwest wind around 8 mph.
Friday Night
Partly cloudy, with a low around -23. West northwest wind around 7 mph becoming south southwest after midnight.
Saturday
Mostly sunny and cold, with a high near -1.
Saturday Night
Partly cloudy, with a low around -12.
Sunday
Mostly sunny, with a high near 11.
Sunday Night
Partly cloudy, with a low around -5.
Monday
Mostly sunny, with a high near 13.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles S Ortley SD
 45.21°N 97.24°W (Elev. 1900 ft)
12:36 am CST Jan 20, 2026
12am CST Jan 20, 2026-6pm CST Jan 26, 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