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

Lake Effect Snow through Saturday: A Series of Storms Impact the West

Lake effect snow showers will continue through Saturday downwind of Lakes Erie, Ontario and the eastern portion of Lake Superior. A series of storm systems will continue to impact California and the Pacific Northwest through the weekend and into next week, bringing widespread rainfall, mountain snowfall, and gusty winds. Coastal flooding is expected in northern California. Read More >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Overcast

14°F

-10°C

Humidity 77%
Wind Speed SE 6 mph
Barometer 29.98 in (1018.8 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill5°F (-15°C)
Last update 2 Jan 10:53 pm CST
Extended Forecast for

Watertown SD

  • Tonight

    Tonight: A slight chance of snow showers and freezing rain before 2am, then a chance of flurries between 2am and 4am. Patchy fog between 1am and 3am. Otherwise, mostly cloudy, with a low around 11. South southeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 20%.

    Low: 11 °F

    Slight Chance
    Wintry Mix
    and Patchy
    Fog

  • Saturday

    Saturday: Partly sunny, with a high near 25. Calm wind becoming west northwest around 6 mph in the morning.

    High: 25 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 12. Northeast wind 5 to 11 mph becoming southeast after midnight.

    Low: 12 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 37. South wind 10 to 18 mph, with gusts as high as 29 mph.

    High: 37 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 23. West wind 5 to 9 mph.

    Low: 23 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 40. Southwest wind around 6 mph becoming south southeast in the afternoon.

    High: 40 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 25. South southeast wind 5 to 7 mph becoming west northwest after midnight.

    Low: 25 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 39. West wind 7 to 9 mph.

    High: 39 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 24. South southwest wind 6 to 8 mph.

    Low: 24 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of snow showers and freezing rain before 2am, then a chance of flurries between 2am and 4am. Patchy fog between 1am and 3am. Otherwise, mostly cloudy, with a low around 11. South southeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 25. Calm wind becoming west northwest around 6 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 12. Northeast wind 5 to 11 mph becoming southeast after midnight.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 37. South wind 10 to 18 mph, with gusts as high as 29 mph.
Sunday Night
Partly cloudy, with a low around 23. West wind 5 to 9 mph.
Monday
Partly sunny, with a high near 40. Southwest wind around 6 mph becoming south southeast in the afternoon.
Monday Night
Mostly cloudy, with a low around 25. South southeast wind 5 to 7 mph becoming west northwest after midnight.
Tuesday
Mostly sunny, with a high near 39. West wind 7 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 24. South southwest wind 6 to 8 mph.
Wednesday
Mostly sunny, with a high near 42.
Wednesday Night
Mostly cloudy, with a low around 25.
Thursday
Mostly cloudy, with a high near 37.
Thursday Night
A slight chance of snow and freezing rain. Mostly cloudy, with a low around 20. Chance of precipitation is 20%.
Friday
A slight chance of snow. Partly sunny, with a high near 29. Chance of precipitation is 20%.
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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:
10:36 pm CST Jan 2, 2026
Forecast Valid:
11pm CST Jan 2, 2026-6pm CST Jan 9, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation