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

22°F

-6°C

Humidity 89%
Wind Speed SE 6 mph
Barometer 29.72 in (1009.3 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 18 Mar 12:53 am CDT
Extended Forecast for

Willow Lake SD

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 29. West southwest wind around 8 mph.

    Low: 29 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 45. West wind 8 to 10 mph.

    High: 45 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 31. Southwest wind around 7 mph becoming northwest after midnight.

    Low: 31 °F

    Mostly Cloudy

  • Thursday

    Thursday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 53. North northwest wind 6 to 10 mph becoming southwest in the afternoon.

    High: 53 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 38. South southwest wind around 10 mph.

    Low: 38 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 66. West northwest wind 10 to 15 mph.

    High: 66 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42. West northwest wind around 10 mph becoming south in the evening.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 71. South southwest wind 11 to 17 mph becoming west in the afternoon. Winds could gust as high as 26 mph.

    High: 71 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain and snow after 1am. Mostly cloudy, with a low around 34. North northeast wind 15 to 18 mph. Chance of precipitation is 20%.

    Low: 34 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 29. West southwest wind around 8 mph.
Wednesday
Partly sunny, with a high near 45. West wind 8 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 31. Southwest wind around 7 mph becoming northwest after midnight.
Thursday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 53. North northwest wind 6 to 10 mph becoming southwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 38. South southwest wind around 10 mph.
Friday
Mostly sunny, with a high near 66. West northwest wind 10 to 15 mph.
Friday Night
Partly cloudy, with a low around 42. West northwest wind around 10 mph becoming south in the evening.
Saturday
Mostly sunny, with a high near 71. South southwest wind 11 to 17 mph becoming west in the afternoon. Winds could gust as high as 26 mph.
Saturday Night
A slight chance of rain and snow after 1am. Mostly cloudy, with a low around 34. North northeast wind 15 to 18 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, with a high near 44. Breezy.
Sunday Night
Partly cloudy, with a low around 23.
Monday
Partly sunny, with a high near 45. Breezy.
Monday Night
Mostly cloudy, with a low around 29.
Tuesday
A slight chance of rain and snow. Partly sunny, with a high near 49. Breezy. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Willow Lake SD
 44.62°N 97.65°W (Elev. 1762 ft)
Last Update:
12:26 am CDT Mar 18, 2026
Forecast Valid:
1am CDT Mar 18, 2026-6pm CDT Mar 24, 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