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

51°F

11°C

Humidity 89%
Wind Speed Calm
Barometer 30.04 in (1017.0 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 20 Jun 3:53 am CDT
Extended Forecast for

Lily SD

  • Today

    Today: Sunny, with a high near 74. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 74 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 54. East wind 6 to 14 mph, with gusts as high as 22 mph.

    Low: 54 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A chance of showers, mainly between 1pm and 5pm. Mostly cloudy, with a high near 70. East wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    High: 70 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of showers after 7pm. Mostly cloudy, with a low around 52. North northeast wind 5 to 8 mph. Chance of precipitation is 20%.

    Low: 52 °F

    Slight Chance
    Showers

  • Monday

    Monday: Partly sunny, with a high near 72. Northeast wind around 7 mph becoming south in the afternoon.

    High: 72 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 54. South southeast wind 6 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Chance
    T-storms then
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Partly sunny, with a high near 72. West northwest wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    High: 72 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 1am. Mostly clear, with a low around 50. Northwest wind 7 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    Low: 50 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Mostly sunny, with a high near 71. North northwest wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 71 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 74. Calm wind becoming north northwest around 5 mph in the afternoon.
Tonight
Increasing clouds, with a low around 54. East wind 6 to 14 mph, with gusts as high as 22 mph.
Sunday
A chance of showers, mainly between 1pm and 5pm. Mostly cloudy, with a high near 70. East wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Sunday Night
A slight chance of showers after 7pm. Mostly cloudy, with a low around 52. North northeast wind 5 to 8 mph. Chance of precipitation is 20%.
Monday
Partly sunny, with a high near 72. Northeast wind around 7 mph becoming south in the afternoon.
Monday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 54. South southeast wind 6 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 72. West northwest wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Tuesday Night
A slight chance of showers and thunderstorms before 1am. Mostly clear, with a low around 50. Northwest wind 7 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 71. North northwest wind 9 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
Partly cloudy, with a low around 54.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 75. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lily SD
 45.2°N 97.67°W (Elev. 1841 ft)
Last Update:
3:36 am CDT Jun 20, 2026
Forecast Valid:
4am CDT Jun 20, 2026-6pm CDT Jun 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation