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.

Mostly Cloudy

43°F

6°C

Humidity 89%
Wind Speed SE 3 mph
Barometer 29.80 in (1009.3 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 21 Mar 2:53 am CDT
Extended Forecast for

3 Miles ESE Watertown Municipal Airport SD

  • Overnight

    Overnight: Mostly clear, with a low around 44. South wind 5 to 7 mph.

    Low: 44 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 77. Southwest wind around 10 mph becoming west northwest in the morning.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain after 1am. Mostly cloudy, with a low around 31. North northeast wind 9 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    Low: 31 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Sunday

    Sunday: Cloudy through mid morning, then gradual clearing, with a high near 43. North wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 43 °F

    Gradual
    Clearing

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 25. North northwest wind 5 to 8 mph becoming east southeast after midnight.

    Low: 25 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of rain after 1pm. Partly sunny, with a high near 51. South wind 6 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 51 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 35. South wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 55. South southeast wind 10 to 13 mph becoming east in the afternoon. Winds could gust as high as 21 mph.

    High: 55 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34. East wind around 11 mph, with gusts as high as 20 mph.

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 44. South wind 5 to 7 mph.
Saturday
Sunny, with a high near 77. Southwest wind around 10 mph becoming west northwest in the morning.
Saturday Night
A slight chance of rain after 1am. Mostly cloudy, with a low around 31. North northeast wind 9 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Sunday
Cloudy through mid morning, then gradual clearing, with a high near 43. North wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 25. North northwest wind 5 to 8 mph becoming east southeast after midnight.
Monday
A slight chance of rain after 1pm. Partly sunny, with a high near 51. South wind 6 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, with a low around 35. South wind 11 to 14 mph, with gusts as high as 23 mph.
Tuesday
Mostly cloudy, with a high near 55. South southeast wind 10 to 13 mph becoming east in the afternoon. Winds could gust as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 34. East wind around 11 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a high near 62.
Wednesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 33. Chance of precipitation is 20%.
Thursday
Partly sunny, with a high near 44. Breezy.
Thursday Night
Mostly cloudy, with a low around 20.
Friday
Partly sunny, with a high near 43.
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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:
2:36 am CDT Mar 21, 2026
Forecast Valid:
2am CDT Mar 21, 2026-6pm CDT Mar 27, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation