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

Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Overcast

33°F

1°C

Humidity 70%
Wind Speed W 14 G 24 mph
Barometer 30.04 in (1020.0 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 30 Dec 12:53 pm CST
Extended Forecast for

Watertown SD

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 35. Northwest wind 14 to 16 mph, with gusts as high as 26 mph.

    High: 35 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 18. Northwest wind 8 to 14 mph, with gusts as high as 24 mph.

    Low: 18 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a temperature falling to around 11 by 5pm. North northeast wind 7 to 14 mph, with gusts as high as 22 mph.

    High: 26 °F⇓

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 1. North wind 5 to 10 mph becoming light and variable in the evening.

    Low: 1 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 22. Light and variable wind becoming south southwest 5 to 9 mph in the morning.

    High: 22 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 9. West northwest wind around 5 mph becoming light and variable.

    Low: 9 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 20. North wind 3 to 5 mph.

    High: 20 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 10. Calm wind becoming southeast around 5 mph after midnight.

    Low: 10 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 27. South southeast wind 6 to 10 mph.

    High: 27 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 35. Northwest wind 14 to 16 mph, with gusts as high as 26 mph.
Tonight
Mostly cloudy, with a low around 18. Northwest wind 8 to 14 mph, with gusts as high as 24 mph.
Wednesday
Mostly cloudy, with a temperature falling to around 11 by 5pm. North northeast wind 7 to 14 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 1. North wind 5 to 10 mph becoming light and variable in the evening.
New Year's Day
Partly sunny, with a high near 22. Light and variable wind becoming south southwest 5 to 9 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 9. West northwest wind around 5 mph becoming light and variable.
Friday
Partly sunny, with a high near 20. North wind 3 to 5 mph.
Friday Night
Mostly cloudy, with a low around 10. Calm wind becoming southeast around 5 mph after midnight.
Saturday
Partly sunny, with a high near 27. South southeast wind 6 to 10 mph.
Saturday Night
Mostly cloudy, with a low around 17.
Sunday
Partly sunny, with a high near 31.
Sunday Night
Partly cloudy, with a low around 17.
Monday
Mostly sunny, with a high near 32.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Watertown SD
 44.91°N 97.14°W (Elev. 1736 ft)
Last Update:
12:26 pm CST Dec 30, 2025
Forecast Valid:
1pm CST Dec 30, 2025-6pm CST Jan 5, 2026
 
Forecast Discussion
 
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Additional Resources

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