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

Lake Effect Snow in the Lower Great Lakes; Rain and High Elevation Snow in the West

Lake-effect snow will continue downwind of Lakes Erie and Ontario through Friday. In the Western U.S., rain and higher elevation snow will continue over the Great Basin through Friday. A front will move over the Pacific Northwest Thursday afternoon and produce light rain and higher elevation snow over the Cascades through Saturday. Read More >

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Overcast

34°F

1°C

Humidity 67%
Wind Speed SE 6 mph
Barometer 30.05 in (1019.1 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 12 Feb 5:53 am CST
Extended Forecast for

Watertown SD

  • Today

    Today: Sunny, with a high near 49. South southeast wind 5 to 7 mph becoming west in the afternoon.

    High: 49 °F

    Sunny

  • Tonight

    Tonight: Patchy fog between 2am and 4am. Otherwise, mostly clear, with a low around 27. West wind around 5 mph becoming calm in the evening.

    Low: 27 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Sunny, with a high near 51. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 51 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 30. South wind 5 to 7 mph.

    Low: 30 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 52. West southwest wind 5 to 9 mph.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 29. West northwest wind around 6 mph.

    Low: 29 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 54. West southwest wind 5 to 10 mph becoming south in the afternoon.

    High: 54 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 32. South southeast wind around 9 mph becoming east northeast after midnight.

    Low: 32 °F

    Mostly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 50. East northeast wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 50 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 49. South southeast wind 5 to 7 mph becoming west in the afternoon.
Tonight
Patchy fog between 2am and 4am. Otherwise, mostly clear, with a low around 27. West wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 51. Calm wind becoming southwest 5 to 8 mph in the morning.
Friday Night
Mostly clear, with a low around 30. South wind 5 to 7 mph.
Saturday
Sunny, with a high near 52. West southwest wind 5 to 9 mph.
Saturday Night
Partly cloudy, with a low around 29. West northwest wind around 6 mph.
Sunday
Partly sunny, with a high near 54. West southwest wind 5 to 10 mph becoming south in the afternoon.
Sunday Night
Mostly cloudy, with a low around 32. South southeast wind around 9 mph becoming east northeast after midnight.
Washington's Birthday
Mostly sunny, with a high near 50. East northeast wind 8 to 11 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 32.
Tuesday
A chance of rain. Partly sunny, with a high near 46. Chance of precipitation is 30%.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 50%.
Wednesday
A chance of snow. Mostly sunny, with a high near 39. Chance of precipitation is 30%.
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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:
5:36 am CST Feb 12, 2026
Forecast Valid:
6am CST Feb 12, 2026-6pm CST Feb 18, 2026
 
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Additional Resources

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Chance of Precipitation