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.

Partly Cloudy

30°F

-1°C

Humidity 88%
Wind Speed W 8 mph
Barometer 30.05 in (1019.3 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 19 Apr 2:53 am CDT
Extended Forecast for

Lily SD

  • Overnight

    Overnight: A slight chance of snow showers before 4am. Mostly cloudy, with a low around 26. North northwest wind around 10 mph. Chance of precipitation is 20%.

    Low: 26 °F

    Slight Chance
    Snow Showers

  • Sunday

    Sunday: Sunny, with a high near 43. North wind 7 to 10 mph.

    High: 43 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 28. North wind 6 to 14 mph becoming south southeast after midnight. Winds could gust as high as 22 mph.

    Low: 28 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 66. Breezy, with a south wind 16 to 23 mph, with gusts as high as 34 mph.

    High: 66 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. Southwest wind 7 to 11 mph becoming north northeast after midnight.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 71. Northeast wind around 8 mph becoming east southeast in the afternoon.

    High: 71 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 51. Southeast wind 10 to 15 mph, with gusts as high as 24 mph.

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84. Breezy, with a south southeast wind 15 to 23 mph, with gusts as high as 36 mph.

    High: 84 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 58. Breezy, with a south wind 24 to 26 mph, with gusts as high as 38 mph. Chance of precipitation is 50%.

    Low: 58 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Overnight
A slight chance of snow showers before 4am. Mostly cloudy, with a low around 26. North northwest wind around 10 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 43. North wind 7 to 10 mph.
Sunday Night
Mostly clear, with a low around 28. North wind 6 to 14 mph becoming south southeast after midnight. Winds could gust as high as 22 mph.
Monday
Mostly sunny, with a high near 66. Breezy, with a south wind 16 to 23 mph, with gusts as high as 34 mph.
Monday Night
Mostly clear, with a low around 40. Southwest wind 7 to 11 mph becoming north northeast after midnight.
Tuesday
Sunny, with a high near 71. Northeast wind around 8 mph becoming east southeast in the afternoon.
Tuesday Night
Mostly clear, with a low around 51. Southeast wind 10 to 15 mph, with gusts as high as 24 mph.
Wednesday
Mostly sunny, with a high near 84. Breezy, with a south southeast wind 15 to 23 mph, with gusts as high as 36 mph.
Wednesday Night
A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 58. Breezy, with a south wind 24 to 26 mph, with gusts as high as 38 mph. Chance of precipitation is 50%.
Thursday
A chance of showers. Mostly sunny, with a high near 71. Windy. Chance of precipitation is 40%.
Thursday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 35. Breezy. Chance of precipitation is 30%.
Friday
A slight chance of rain and snow showers. Mostly sunny, with a high near 50. Breezy. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 30. Blustery.
Saturday
Mostly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lily SD
 45.18°N 97.7°W (Elev. 1824 ft)
Last Update:
2:36 am CDT Apr 19, 2026
Forecast Valid:
3am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation