Prolonged Extreme Cold; Eastern U.S. Winter Storm

Another Arctic blast will surge south across the northern Plains tonight, crossing the Midwest and reaching the Gulf Coast Friday night. Dangerously cold temperatures will persist across the eastern U.S. into early February. There is increasing confidence for significant heavy snow across much of the Southern Appalachians, Carolinas, and southern Mid-Atlantic Friday into Sunday. Read More >

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

9°F

-13°C

Humidity 70%
Wind Speed NW 6 mph
Barometer 30.27 in (1029.6 mb)
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill-1°F (-18°C)
Last update 29 Jan 12:53 pm CST
Extended Forecast for

4 Miles ESE Castlewood SD

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 13. North wind around 5 mph.

    High: 13 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around -10. Wind chill values as low as -24. North northeast wind 5 to 8 mph.

    Low: -10 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and cold, with a high near 3. Wind chill values as low as -26. North northeast wind 5 to 10 mph.

    High: 3 °F

    Cold

  • Friday Night

    Friday Night: Mostly clear, with a low around -11. Wind chill values as low as -24. Calm wind becoming south southwest 5 to 7 mph after midnight.

    Low: -11 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of snow after noon.  Patchy blowing snow between 2pm and 5pm. Mostly sunny, with a high near 18. Breezy, with a south wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph.  Chance of precipitation is 30%.

    High: 18 °F

    Sunny then
    Chance Snow
    and Patchy
    Blowing Snow

  • Saturday Night

    Saturday Night: Snow.  Low around 13. South wind 13 to 18 mph becoming west after midnight. Winds could gust as high as 31 mph.  Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 13 °F

    Snow

  • Sunday

    Sunday: A slight chance of snow before noon.  Patchy blowing snow between noon and 2pm. Mostly cloudy, with a high near 31. Northwest wind 11 to 17 mph, with gusts as high as 26 mph.  Chance of precipitation is 20%.

    High: 31 °F

    Slight Chance
    Snow and
    Patchy
    Blowing Snow

  • Sunday Night

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

    Low: 5 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 20. Light and variable wind becoming southeast 5 to 8 mph in the morning.

    High: 20 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 13. North wind around 5 mph.
Tonight
Partly cloudy, with a low around -10. Wind chill values as low as -24. North northeast wind 5 to 8 mph.
Friday
Sunny and cold, with a high near 3. Wind chill values as low as -26. North northeast wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around -11. Wind chill values as low as -24. Calm wind becoming south southwest 5 to 7 mph after midnight.
Saturday
A chance of snow after noon. Patchy blowing snow between 2pm and 5pm. Mostly sunny, with a high near 18. Breezy, with a south wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 30%.
Saturday Night
Snow. Low around 13. South wind 13 to 18 mph becoming west after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Sunday
A slight chance of snow before noon. Patchy blowing snow between noon and 2pm. Mostly cloudy, with a high near 31. Northwest wind 11 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 5. North northwest wind 5 to 10 mph becoming light north after midnight.
Monday
Partly sunny, with a high near 20. Light and variable wind becoming southeast 5 to 8 mph in the morning.
Monday Night
A slight chance of snow after midnight. Mostly cloudy, with a low around 10. Chance of precipitation is 20%.
Tuesday
A chance of snow. Mostly cloudy, with a high near 25. Chance of precipitation is 30%.
Tuesday Night
A slight chance of snow. Mostly cloudy, with a low around 12. Chance of precipitation is 20%.
Wednesday
Mostly cloudy, with a high near 25.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Castlewood SD
 44.72°N 96.96°W (Elev. 1749 ft)
12:36 pm CST Jan 29, 2026
1pm CST Jan 29, 2026-6pm CST Feb 4, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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