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

68°F

20°C

Humidity 36%
Wind Speed NW 14 G 18 mph
Barometer 30.04 in (1016.9 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 12 Sep 4:53 pm CDT
Extended Forecast for

Henry SD

  • Tonight

    Tonight: Mostly cloudy, with a low around 50. Northwest wind 6 to 11 mph becoming light and variable in the evening.

    Low: 50 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers before 11am. Cloudy through mid morning, then gradual clearing, with a high near 70. Northeast wind 5 to 7 mph becoming east southeast in the afternoon. Chance of precipitation is 20%.

    High: 70 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers, mainly after 5am. Increasing clouds, with a low around 54. Southeast wind 7 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    Low: 54 °F

    Mostly Clear
    then Chance
    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm before 1pm, then a chance of showers. High near 71. Breezy, with a southeast wind 21 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 71 °F

    Showers and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 49. West wind 10 to 14 mph, with gusts as high as 24 mph.

    Low: 49 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 67. Northwest wind 9 to 17 mph, with gusts as high as 25 mph.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50. North wind 5 to 7 mph becoming east after midnight.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers. Partly sunny, with a high near 66. East southeast wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 66 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers before 1am. Mostly cloudy, with a low around 51. East wind 5 to 9 mph. Chance of precipitation is 20%.

    Low: 51 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 50. Northwest wind 6 to 11 mph becoming light and variable in the evening.
Sunday
A slight chance of showers before 11am. Cloudy through mid morning, then gradual clearing, with a high near 70. Northeast wind 5 to 7 mph becoming east southeast in the afternoon. Chance of precipitation is 20%.
Sunday Night
A chance of showers, mainly after 5am. Increasing clouds, with a low around 54. Southeast wind 7 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Monday
Showers and possibly a thunderstorm before 1pm, then a chance of showers. High near 71. Breezy, with a southeast wind 21 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Partly cloudy, with a low around 49. West wind 10 to 14 mph, with gusts as high as 24 mph.
Tuesday
Sunny, with a high near 67. Northwest wind 9 to 17 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 50. North wind 5 to 7 mph becoming east after midnight.
Wednesday
A slight chance of showers. Partly sunny, with a high near 66. East southeast wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers before 1am. Mostly cloudy, with a low around 51. East wind 5 to 9 mph. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 70.
Thursday Night
A chance of showers. Partly cloudy, with a low around 52. Chance of precipitation is 30%.
Friday
A chance of showers. Mostly sunny, with a high near 70. Chance of precipitation is 30%.
Friday Night
A chance of showers. Partly cloudy, with a low around 52. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 72.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Henry SD
 44.88°N 97.48°W (Elev. 1818 ft)
Last Update:
4:21 pm CDT Sep 12, 2026
Forecast Valid:
5pm CDT Sep 12, 2026-6pm CDT Sep 19, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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