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

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

40°F

4°C

Humidity 49%
Wind Speed S 9 mph
Barometer 29.90 in (1013.1 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 29 Mar 2:53 am CDT
Extended Forecast for

Willow Lake SD

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 45. South southeast wind around 11 mph.

    Low: 45 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy through mid morning, then gradual clearing, with a high near 69. South southeast wind 7 to 10 mph becoming west in the afternoon.

    High: 69 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40. Northwest wind 6 to 13 mph becoming east southeast after midnight.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 68. East wind 11 to 16 mph becoming north in the afternoon.

    High: 68 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A slight chance of rain after 1am. Mostly cloudy, with a low around 33. Breezy, with an east northeast wind 10 to 15 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 20%.

    Low: 33 °F

    Partly Cloudy
    then Slight
    Chance Rain
    and Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 44. Breezy, with a north northwest wind 22 to 25 mph, with gusts as high as 33 mph.

    High: 44 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 20. Blustery, with a north wind 10 to 20 mph.

    Low: 20 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 44. East southeast wind 10 to 16 mph, with gusts as high as 24 mph.

    High: 44 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of snow, mainly after 1am. Mostly cloudy, with a low around 30. Breezy, with an east southeast wind 18 to 21 mph. Chance of precipitation is 30%.

    Low: 30 °F

    Chance Snow
    and Breezy

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 45. South southeast wind around 11 mph.
Sunday
Mostly cloudy through mid morning, then gradual clearing, with a high near 69. South southeast wind 7 to 10 mph becoming west in the afternoon.
Sunday Night
Mostly clear, with a low around 40. Northwest wind 6 to 13 mph becoming east southeast after midnight.
Monday
Mostly sunny, with a high near 68. East wind 11 to 16 mph becoming north in the afternoon.
Monday Night
A slight chance of rain after 1am. Mostly cloudy, with a low around 33. Breezy, with an east northeast wind 10 to 15 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 44. Breezy, with a north northwest wind 22 to 25 mph, with gusts as high as 33 mph.
Tuesday Night
Partly cloudy, with a low around 20. Blustery, with a north wind 10 to 20 mph.
Wednesday
Partly sunny, with a high near 44. East southeast wind 10 to 16 mph, with gusts as high as 24 mph.
Wednesday Night
A chance of snow, mainly after 1am. Mostly cloudy, with a low around 30. Breezy, with an east southeast wind 18 to 21 mph. Chance of precipitation is 30%.
Thursday
A chance of snow before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 45. Breezy. Chance of precipitation is 50%.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 32. Breezy. Chance of precipitation is 50%.
Friday
Rain likely. Mostly cloudy, with a high near 46. Breezy. Chance of precipitation is 70%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 29. Blustery. Chance of precipitation is 50%.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 40. Breezy. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Willow Lake SD
 44.62°N 97.65°W (Elev. 1762 ft)
Last Update:
2:56 am CDT Mar 29, 2026
Forecast Valid:
3am CDT Mar 29, 2026-6pm CDT Apr 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation