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

84°F

29°C

Humidity 48%
Wind Speed N 9 mph
Barometer 29.86 in (1009.5 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 27 Jul 10:53 am CDT
Extended Forecast for

Lily SD

  • Today

    Today: Patchy smoke. Mostly sunny and hot, with a high near 90. North wind around 9 mph.

    High: 90 °F

    Patchy Smoke

  • Tonight

    Tonight: Patchy smoke. Mostly cloudy, with a low around 69. North wind around 5 mph.

    Low: 69 °F

    Patchy Smoke

  • Tuesday

    Tuesday: Patchy smoke. Mostly sunny, with a high near 89. East southeast wind 6 to 8 mph becoming south in the afternoon.

    High: 89 °F

    Patchy Smoke

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 69. South southeast wind 6 to 9 mph.

    Low: 69 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 90. South wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 90 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 70. South wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 85. Southeast wind 8 to 10 mph. Chance of precipitation is 60%.

    High: 85 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Mostly cloudy, with a low around 65. East wind around 7 mph becoming north after midnight. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely

  • Friday

    Friday: Mostly sunny, with a high near 82. North northeast wind around 8 mph.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy smoke. Mostly sunny and hot, with a high near 90. North wind around 9 mph.
Tonight
Patchy smoke. Mostly cloudy, with a low around 69. North wind around 5 mph.
Tuesday
Patchy smoke. Mostly sunny, with a high near 89. East southeast wind 6 to 8 mph becoming south in the afternoon.
Tuesday Night
Partly cloudy, with a low around 69. South southeast wind 6 to 9 mph.
Wednesday
Sunny and hot, with a high near 90. South wind 9 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 70. South wind 8 to 10 mph, with gusts as high as 20 mph.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 85. Southeast wind 8 to 10 mph. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Mostly cloudy, with a low around 65. East wind around 7 mph becoming north after midnight. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 82. North northeast wind around 8 mph.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lily SD
 45.18°N 97.67°W (Elev. 1821 ft)
Last Update:
10:36 am CDT Jul 27, 2026
Forecast Valid:
11am CDT Jul 27, 2026-6pm CDT Aug 2, 2026
 
Forecast Discussion
 
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Additional Resources

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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