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.

Mostly Cloudy and Breezy

21°F

-6°C

Humidity 50%
Wind Speed S 22 G 30 mph
Barometer 30.16 in (1025.6 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill5°F (-15°C)
Last update 31 Jan 2:53 pm CST
Extended Forecast for

Wallace SD

  • This Afternoon

    This Afternoon: Snow likely, mainly after 4pm. Patchy blowing snow after 4pm. Cloudy, with a high near 24. Breezy, with a south wind around 22 mph, with gusts as high as 36 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.

    High: 24 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Tonight

    Tonight: Snow and freezing rain likely before midnight, then snow likely between midnight and 1am, then a chance of snow and freezing rain after 1am. Patchy blowing snow before 7pm. Mostly cloudy, with a low around 17. Breezy, with a south wind 13 to 22 mph becoming west after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 70%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.

    Low: 17 °F

    Wintry Mix
    Likely and
    Patchy
    Blowing Snow

  • Sunday

    Sunday: A slight chance of snow and freezing rain before 8am, then a slight chance of snow between 8am and 9am. Mostly cloudy, with a high near 31. Northwest wind 10 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    High: 31 °F

    Slight Chance
    Wintry Mix
    then Mostly
    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 9. North northwest wind 5 to 10 mph becoming northeast after midnight.

    Low: 9 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 18. East northeast wind around 7 mph.

    High: 18 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of snow, mainly before midnight. Mostly cloudy, with a low around 5. East northeast wind around 6 mph. Chance of precipitation is 30%.

    Low: 5 °F

    Chance Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 19. East northeast wind around 6 mph becoming west in the afternoon.

    High: 19 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 10. West wind 5 to 7 mph.

    Low: 10 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 28. Northwest wind 7 to 10 mph.

    High: 28 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Snow likely, mainly after 4pm. Patchy blowing snow after 4pm. Cloudy, with a high near 24. Breezy, with a south wind around 22 mph, with gusts as high as 36 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow and freezing rain likely before midnight, then snow likely between midnight and 1am, then a chance of snow and freezing rain after 1am. Patchy blowing snow before 7pm. Mostly cloudy, with a low around 17. Breezy, with a south wind 13 to 22 mph becoming west after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 70%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.
Sunday
A slight chance of snow and freezing rain before 8am, then a slight chance of snow between 8am and 9am. Mostly cloudy, with a high near 31. Northwest wind 10 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 9. North northwest wind 5 to 10 mph becoming northeast after midnight.
Monday
Partly sunny, with a high near 18. East northeast wind around 7 mph.
Monday Night
A chance of snow, mainly before midnight. Mostly cloudy, with a low around 5. East northeast wind around 6 mph. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 19. East northeast wind around 6 mph becoming west in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 10. West wind 5 to 7 mph.
Wednesday
Mostly cloudy, with a high near 28. Northwest wind 7 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 20.
Thursday
Mostly sunny, with a high near 38.
Thursday Night
Partly cloudy, with a low around 21.
Friday
Mostly sunny, with a high near 29.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Wallace SD
 45.07°N 97.48°W (Elev. 1814 ft)
Last Update:
3:16 pm CST Jan 31, 2026
Forecast Valid:
3pm 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