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

45°F

7°C

Humidity 68%
Wind Speed Calm
Barometer 29.85 in (1011.1 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 20 Mar 1:53 am CDT
Extended Forecast for

Henry SD

  • Overnight

    Overnight: Partly cloudy, with a low around 37. North northwest wind 8 to 10 mph.

    Low: 37 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 67. North wind 5 to 13 mph becoming west southwest in the morning.

    High: 67 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42. West wind 6 to 10 mph becoming south in the evening.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 76. West wind around 11 mph, with gusts as high as 20 mph.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain after 1am. Mostly cloudy, with a low around 32. North northeast wind 10 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

    Low: 32 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Sunday

    Sunday: Partly sunny, with a high near 44. North wind 16 to 18 mph, with gusts as high as 26 mph.

    High: 44 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 26. North northwest wind 6 to 11 mph becoming east southeast after midnight.

    Low: 26 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of rain after 1pm. Partly sunny, with a high near 51. Breezy, with a south wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 20%.

    High: 51 °F

    Partly Sunny
    then Slight
    Chance Rain
    and Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 33. South wind 10 to 14 mph becoming east southeast after midnight. Winds could gust as high as 22 mph.

    Low: 33 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 37. North northwest wind 8 to 10 mph.
Friday
Mostly sunny, with a high near 67. North wind 5 to 13 mph becoming west southwest in the morning.
Friday Night
Partly cloudy, with a low around 42. West wind 6 to 10 mph becoming south in the evening.
Saturday
Mostly sunny, with a high near 76. West wind around 11 mph, with gusts as high as 20 mph.
Saturday Night
A slight chance of rain after 1am. Mostly cloudy, with a low around 32. North northeast wind 10 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, with a high near 44. North wind 16 to 18 mph, with gusts as high as 26 mph.
Sunday Night
Mostly clear, with a low around 26. North northwest wind 6 to 11 mph becoming east southeast after midnight.
Monday
A slight chance of rain after 1pm. Partly sunny, with a high near 51. Breezy, with a south wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, with a low around 33. South wind 10 to 14 mph becoming east southeast after midnight. Winds could gust as high as 22 mph.
Tuesday
Partly sunny, with a high near 51.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
Mostly sunny, with a high near 64.
Wednesday Night
A slight chance of rain and snow. Partly cloudy, with a low around 34. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 46. Breezy.
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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:
1:31 am CDT Mar 20, 2026
Forecast Valid:
2am CDT Mar 20, 2026-6pm CDT Mar 26, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation