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

26°F

-3°C

Humidity 81%
Wind Speed NW 7 mph
Barometer 30.31 in (1028.9 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 22 Mar 8:53 pm CDT
Extended Forecast for

3 Miles ESE Watertown Municipal Airport SD

  • Tonight

    Tonight: Partly cloudy, with a low around 22. North northwest wind around 6 mph becoming calm in the evening.

    Low: 22 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of rain after 4pm. Partly sunny, with a high near 50. South wind 5 to 10 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 20%.

    High: 50 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: A chance of rain, mainly between 7pm and 10pm. Partly cloudy, with a low around 32. South wind 11 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    Low: 32 °F

    Chance Rain
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 55. Southeast wind around 10 mph.

    High: 55 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35. East wind around 8 mph.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 64. Northeast wind around 10 mph becoming south in the afternoon.

    High: 64 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain after 1am. Mostly cloudy, with a low around 37. South wind 7 to 11 mph becoming north northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    Low: 37 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 47. Breezy, with a north wind 14 to 21 mph, with gusts as high as 33 mph.

    High: 47 °F

    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 15. North wind 8 to 18 mph, with gusts as high as 28 mph.

    Low: 15 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 22. North northwest wind around 6 mph becoming calm in the evening.
Monday
A slight chance of rain after 4pm. Partly sunny, with a high near 50. South wind 5 to 10 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 20%.
Monday Night
A chance of rain, mainly between 7pm and 10pm. Partly cloudy, with a low around 32. South wind 11 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Tuesday
Mostly cloudy, with a high near 55. Southeast wind around 10 mph.
Tuesday Night
Mostly cloudy, with a low around 35. East wind around 8 mph.
Wednesday
Partly sunny, with a high near 64. Northeast wind around 10 mph becoming south in the afternoon.
Wednesday Night
A slight chance of rain after 1am. Mostly cloudy, with a low around 37. South wind 7 to 11 mph becoming north northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 47. Breezy, with a north wind 14 to 21 mph, with gusts as high as 33 mph.
Thursday Night
Partly cloudy, with a low around 15. North wind 8 to 18 mph, with gusts as high as 28 mph.
Friday
Sunny, with a high near 40.
Friday Night
Mostly clear, with a low around 24.
Saturday
Sunny, with a high near 51.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Mostly sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Watertown Municipal Airport SD
 44.91°N 97.11°W (Elev. 1752 ft)
Last Update:
9:36 pm CDT Mar 22, 2026
Forecast Valid:
9pm CDT Mar 22, 2026-6pm CDT Mar 29, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation