Prolonged Extreme Cold; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the Gulf Coast, upper Ohio Valley, Mid-Atlantic, and Southeast U.S. into this weekend. A rapidly deepening storm centered just off the North Carolina coast Friday night through Saturday night will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia. Read More >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

-3°F

-19°C

Humidity 71%
Wind Speed NE 7 mph
Barometer 30.62 in (1042.0 mb)
Dewpoint -10°F (-23°C)
Visibility 10.00 mi
Wind Chill-17°F (-27°C)
Last update 30 Jan 9:53 am CST
Extended Forecast for

3 Miles ESE Watertown Municipal Airport SD

  • Today

    Today: Sunny and cold, with a high near 4. Wind chill values as low as -19. North northeast wind 5 to 15 mph.

    High: 4 °F

    Cold

  • Tonight

    Tonight: Mostly clear, with a low around -11. Wind chill values as low as -23. Calm wind becoming south 5 to 7 mph after midnight.

    Low: -11 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of snow, mainly after 5pm.  Patchy blowing snow after 1pm. Increasing clouds, with a high near 19. Wind chill values as low as -25. Breezy, with a south wind 8 to 13 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 34 mph.  Chance of precipitation is 30%.

    High: 19 °F

    Mostly Sunny
    then Chance
    Snow and
    Patchy
    Blowing Snow

  • Saturday Night

    Saturday Night: Snow.  Patchy blowing snow before 9pm. Low around 14. Breezy, with a south wind 11 to 21 mph becoming west after midnight. Winds could gust as high as 34 mph.  Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 14 °F

    Snow and
    Patchy
    Blowing Snow

  • Sunday

    Sunday: A slight chance of snow before noon.  Mostly cloudy, with a high near 30. Northwest wind 11 to 16 mph, with gusts as high as 28 mph.  Chance of precipitation is 20%.

    High: 30 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 7. North northwest wind 5 to 10 mph becoming light and variable  after midnight.

    Low: 7 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 23. Light and variable wind becoming southeast 5 to 8 mph in the morning.

    High: 23 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of snow, mainly after midnight.  Mostly cloudy, with a low around 14. South wind around 7 mph.  Chance of precipitation is 30%.

    Low: 14 °F

    Chance Snow

  • Tuesday

    Tuesday: A chance of snow, mainly after noon.  Mostly cloudy, with a high near 28. South wind 7 to 10 mph becoming north in the morning.  Chance of precipitation is 30%.

    High: 28 °F

    Chance Snow

Detailed Forecast

Today
Sunny and cold, with a high near 4. Wind chill values as low as -19. North northeast wind 5 to 15 mph.
Tonight
Mostly clear, with a low around -11. Wind chill values as low as -23. Calm wind becoming south 5 to 7 mph after midnight.
Saturday
A chance of snow, mainly after 5pm. Patchy blowing snow after 1pm. Increasing clouds, with a high near 19. Wind chill values as low as -25. Breezy, with a south wind 8 to 13 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 30%.
Saturday Night
Snow. Patchy blowing snow before 9pm. Low around 14. Breezy, with a south wind 11 to 21 mph becoming west after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Sunday
A slight chance of snow before noon. Mostly cloudy, with a high near 30. Northwest wind 11 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 7. North northwest wind 5 to 10 mph becoming light and variable after midnight.
Monday
Partly sunny, with a high near 23. Light and variable wind becoming southeast 5 to 8 mph in the morning.
Monday Night
A chance of snow, mainly after midnight. Mostly cloudy, with a low around 14. South wind around 7 mph. Chance of precipitation is 30%.
Tuesday
A chance of snow, mainly after noon. Mostly cloudy, with a high near 28. South wind 7 to 10 mph becoming north in the morning. Chance of precipitation is 30%.
Tuesday Night
A slight chance of snow before midnight. Mostly cloudy, with a low around 14. Chance of precipitation is 20%.
Wednesday
Mostly cloudy, with a high near 24.
Wednesday Night
Mostly cloudy, with a low around 14.
Thursday
Mostly sunny, with a high near 36.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Watertown Municipal Airport SD
 44.91°N 97.11°W (Elev. 1752 ft)
10:21 am CST Jan 30, 2026
10am CST Jan 30, 2026-6pm CST Feb 5, 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