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.

Overcast

72°F

22°C

Humidity 52%
Wind Speed E 3 mph
Barometer 30.01 in (1015.9 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 25 Jun 5:53 pm CDT
Extended Forecast for

Henry SD

  • Tonight

    Tonight: Mostly cloudy, with a low around 56. Calm wind becoming east southeast 5 to 9 mph in the evening.

    Low: 56 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers between 11am and 1pm. Mostly cloudy, with a high near 80. Southeast wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 80 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 63. Southeast wind 14 to 17 mph, with gusts as high as 28 mph.

    Low: 63 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 83. Breezy, with a south southeast wind 20 to 26 mph, with gusts as high as 37 mph. Chance of precipitation is 30%.

    High: 83 °F

    Breezy.
    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 7pm, then a chance of showers between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. Breezy, with a southeast wind 20 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 40%.

    Low: 69 °F

    Chance
    Showers and
    Breezy

  • Sunday

    Sunday: A slight chance of showers and thunderstorms before 1pm. Mostly sunny and hot, with a high near 95. Breezy, with a southeast wind 17 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    High: 95 °F

    Slight Chance
    T-storms and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74. South southeast wind 10 to 13 mph.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 95. Breezy, with a southwest wind 17 to 23 mph, with gusts as high as 31 mph.

    High: 95 °F

    Hot and
    Breezy

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 67. Southwest wind 8 to 15 mph. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly cloudy, with a low around 56. Calm wind becoming east southeast 5 to 9 mph in the evening.
Friday
A slight chance of showers between 11am and 1pm. Mostly cloudy, with a high near 80. Southeast wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 63. Southeast wind 14 to 17 mph, with gusts as high as 28 mph.
Saturday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 83. Breezy, with a south southeast wind 20 to 26 mph, with gusts as high as 37 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 7pm, then a chance of showers between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. Breezy, with a southeast wind 20 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 40%.
Sunday
A slight chance of showers and thunderstorms before 1pm. Mostly sunny and hot, with a high near 95. Breezy, with a southeast wind 17 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 74. South southeast wind 10 to 13 mph.
Monday
Sunny and hot, with a high near 95. Breezy, with a southwest wind 17 to 23 mph, with gusts as high as 31 mph.
Monday Night
A chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 67. Southwest wind 8 to 15 mph. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms, mainly before 1pm. Mostly sunny and hot, with a high near 92. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 68. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 95. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 40%.
Thursday
Mostly sunny and hot, with a high near 95.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Henry SD
 44.88°N 97.48°W (Elev. 1818 ft)
Last Update:
5:36 pm CDT Jun 25, 2026
Forecast Valid:
6pm CDT Jun 25, 2026-6pm CDT Jul 2, 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