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 7 mph
Barometer 30.05 in (1018.8 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 12 Feb 4:53 am CST
Extended Forecast for

4 Miles ESE Castlewood SD

  • Today

    Today: Sunny, with a high near 49. Light and variable wind becoming south southwest 5 to 7 mph in the morning.

    High: 49 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 25. West southwest wind 3 to 5 mph.

    Low: 25 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 52. Southwest wind 3 to 8 mph.

    High: 52 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 30. South wind around 6 mph.

    Low: 30 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 53. West wind 6 to 10 mph.

    High: 53 °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 34. South southeast wind around 9 mph becoming east after midnight.

    Low: 34 °F

    Mostly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 52. East northeast wind 8 to 13 mph.

    High: 52 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 49. Light and variable wind becoming south southwest 5 to 7 mph in the morning.
Tonight
Mostly clear, with a low around 25. West southwest wind 3 to 5 mph.
Friday
Sunny, with a high near 52. Southwest wind 3 to 8 mph.
Friday Night
Mostly clear, with a low around 30. South wind around 6 mph.
Saturday
Sunny, with a high near 53. West wind 6 to 10 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 34. South southeast wind around 9 mph becoming east after midnight.
Washington's Birthday
Mostly sunny, with a high near 52. East northeast wind 8 to 13 mph.
Monday Night
Partly cloudy, with a low around 32.
Tuesday
A chance of rain. Partly sunny, with a high near 47. Chance of precipitation is 30%.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 50%.
Wednesday
A chance of rain and snow. Mostly sunny, with a high near 41. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Castlewood SD
 44.72°N 96.96°W (Elev. 1749 ft)
Last Update:
5:16 am CST Feb 12, 2026
Forecast Valid:
5am CST Feb 12, 2026-6pm CST Feb 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation