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

49°F

9°C

Humidity 71%
Wind Speed Calm
Barometer 30.29 in (1026.3 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 4 Oct 9:53 pm CDT
Extended Forecast for

Henry SD

  • Tonight

    Tonight: Increasing clouds, with a low around 42. Light and variable wind becoming southeast around 6 mph after midnight.

    Low: 42 °F

    Increasing
    Clouds

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 72. Breezy, with a southeast wind 10 to 15 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 36 mph.

    High: 72 °F

    Becoming
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 54. Breezy, with a south wind 17 to 22 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 36 mph.

    Low: 54 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75. Northwest wind 8 to 11 mph.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50. Northwest wind around 5 mph.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 70. North northwest wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 70 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 48. Northwest wind around 5 mph becoming southeast after midnight.

    Low: 48 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 67. East southeast wind 5 to 9 mph.

    High: 67 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 47. East wind around 5 mph.

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 42. Light and variable wind becoming southeast around 6 mph after midnight.
Monday
Partly sunny, then gradually becoming sunny, with a high near 72. Breezy, with a southeast wind 10 to 15 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 36 mph.
Monday Night
Mostly clear, with a low around 54. Breezy, with a south wind 17 to 22 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 36 mph.
Tuesday
Sunny, with a high near 75. Northwest wind 8 to 11 mph.
Tuesday Night
Mostly clear, with a low around 50. Northwest wind around 5 mph.
Wednesday
Mostly sunny, with a high near 70. North northwest wind 6 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 48. Northwest wind around 5 mph becoming southeast after midnight.
Thursday
Mostly sunny, with a high near 67. East southeast wind 5 to 9 mph.
Thursday Night
Partly cloudy, with a low around 47. East wind around 5 mph.
Friday
Mostly sunny, with a high near 68.
Friday Night
Mostly clear, with a low around 57. Breezy.
Saturday
Sunny, with a high near 76. Breezy.
Saturday Night
Mostly clear, with a low around 57. Breezy.
Sunday
A slight chance of showers. Mostly sunny, with a high near 67. Breezy. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Henry SD
 44.88°N 97.48°W (Elev. 1818 ft)
Last Update:
9:21 pm CDT Oct 4, 2026
Forecast Valid:
10pm CDT Oct 4, 2026-6pm CDT Oct 11, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation