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

9 Miles S Ortley SD

  • Overnight

    Overnight: Mostly clear, with a low around 45. South southwest wind around 10 mph.

    Low: 45 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 75. West northwest wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: A chance of rain, mainly between 1am and 4am. Mostly cloudy, with a low around 29. Blustery, with a north northeast wind 13 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.

    Low: 29 °F

    Blustery.
    Mostly Cloudy
    then Chance
    Rain

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 40. North wind 11 to 17 mph, with gusts as high as 26 mph.

    High: 40 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 25. North northwest wind 6 to 9 mph becoming east after midnight.

    Low: 25 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of rain after 1pm. Partly sunny, with a high near 50. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 20%.

    High: 50 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 35. South wind around 14 mph, with gusts as high as 24 mph.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 53. East wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 53 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34. East wind 11 to 13 mph, with gusts as high as 21 mph.

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 45. South southwest wind around 10 mph.
Saturday
Sunny, with a high near 75. West northwest wind 11 to 14 mph, with gusts as high as 22 mph.
Saturday Night
A chance of rain, mainly between 1am and 4am. Mostly cloudy, with a low around 29. Blustery, with a north northeast wind 13 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 40. North wind 11 to 17 mph, with gusts as high as 26 mph.
Sunday Night
Partly cloudy, with a low around 25. North northwest wind 6 to 9 mph becoming east after midnight.
Monday
A slight chance of rain after 1pm. Partly sunny, with a high near 50. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, with a low around 35. South wind around 14 mph, with gusts as high as 24 mph.
Tuesday
Mostly cloudy, with a high near 53. East wind 11 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 34. East wind 11 to 13 mph, with gusts as high as 21 mph.
Wednesday
Partly sunny, with a high near 61.
Wednesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 20%.
Thursday
Partly sunny, with a high near 42. Breezy.
Thursday Night
Mostly cloudy, with a low around 19.
Friday
Mostly sunny, with a high near 41.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles S Ortley SD
 45.21°N 97.24°W (Elev. 1900 ft)
Last Update:
3:16 am CDT Mar 21, 2026
Forecast Valid:
3am 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