National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Another Arctic Blast in the East; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the upper Ohio Valley, Mid-Atlantic, Gulf Coast and Southeast U.S. this weekend. A rapidly deepening storm will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia into Sunday. Storm-force winds and coastal flooding will be possible along the East Coast. Read More >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

-6°F

-21°C

Humidity 78%
Wind Speed SE 3 mph
Barometer 30.59 in (1041.3 mb)
Dewpoint -11°F (-24°C)
Visibility 10.00 mi
Last update 30 Jan 11:53 pm CST
Extended Forecast for

Willow Lake SD

  • Overnight

    Overnight: Mostly clear, with a low around -9. Wind chill values as low as -24. South wind 6 to 11 mph.

    Low: -9 °F

    Mostly Clear

  • Saturday

    Saturday: Snow, mainly after 3pm. Patchy blowing snow after 2pm. High near 21. Wind chill values as low as -23. Breezy, with a south wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 21 °F

    Mostly Sunny
    and Breezy
    then Snow and
    Patchy
    Blowing Snow

  • Saturday Night

    Saturday Night: Snow and freezing rain before 11pm, then a chance of snow between 11pm and 4am. Patchy blowing snow before 10pm. Temperature rising to around 24 by 5am. Breezy, with a south wind 14 to 23 mph becoming west after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 80%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.

    Low: 17 °F⇑

    Wintry Mix
    and Patchy
    Blowing Snow
    then Chance
    Snow

  • Sunday

    Sunday: Mostly cloudy, with a high near 31. Northwest wind 11 to 18 mph, with gusts as high as 26 mph.

    High: 31 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 13. North northwest wind 5 to 10 mph becoming east after midnight.

    Low: 13 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 27. Southeast wind 6 to 10 mph.

    High: 27 °F

    Partly Sunny

  • Monday Night

    Monday Night: A slight chance of snow. Mostly cloudy, with a low around 14. East southeast wind 7 to 9 mph. Chance of precipitation is 20%.

    Low: 14 °F

    Slight Chance
    Snow

  • Tuesday

    Tuesday: A chance of snow. Mostly cloudy, with a high near 26. East wind around 10 mph becoming north northwest in the afternoon. Chance of precipitation is 30%.

    High: 26 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: A slight chance of snow. Mostly cloudy, with a low around 11. Northwest wind around 8 mph. Chance of precipitation is 20%.

    Low: 11 °F

    Slight Chance
    Snow

Detailed Forecast

Overnight
Mostly clear, with a low around -9. Wind chill values as low as -24. South wind 6 to 11 mph.
Saturday
Snow, mainly after 3pm. Patchy blowing snow after 2pm. High near 21. Wind chill values as low as -23. Breezy, with a south wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Saturday Night
Snow and freezing rain before 11pm, then a chance of snow between 11pm and 4am. Patchy blowing snow before 10pm. Temperature rising to around 24 by 5am. Breezy, with a south wind 14 to 23 mph becoming west after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 80%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.
Sunday
Mostly cloudy, with a high near 31. Northwest wind 11 to 18 mph, with gusts as high as 26 mph.
Sunday Night
Mostly cloudy, with a low around 13. North northwest wind 5 to 10 mph becoming east after midnight.
Monday
Partly sunny, with a high near 27. Southeast wind 6 to 10 mph.
Monday Night
A slight chance of snow. Mostly cloudy, with a low around 14. East southeast wind 7 to 9 mph. Chance of precipitation is 20%.
Tuesday
A chance of snow. Mostly cloudy, with a high near 26. East wind around 10 mph becoming north northwest in the afternoon. Chance of precipitation is 30%.
Tuesday Night
A slight chance of snow. Mostly cloudy, with a low around 11. Northwest wind around 8 mph. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 25.
Wednesday Night
Mostly cloudy, with a low around 17.
Thursday
Mostly sunny, with a high near 39.
Thursday Night
Partly cloudy, with a low around 18.
Friday
Partly sunny, with a high near 28.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Willow Lake SD
 44.62°N 97.65°W (Elev. 1762 ft)
Last Update:
12:21 am CST Jan 31, 2026
Forecast Valid:
12am CST Jan 31, 2026-6pm CST Feb 6, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation