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

47°F

8°C

Humidity 83%
Wind Speed Calm
Barometer 29.78 in (1009.4 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 14 Apr 9:53 pm CDT
Extended Forecast for

9 Miles S Ortley SD

  • Tonight

    Tonight: Partly cloudy, with a low around 40. East northeast wind 5 to 7 mph becoming south southeast after midnight.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of sprinkles before 9am. Mostly sunny, with a high near 71. South southeast wind 6 to 9 mph becoming west in the morning.

    High: 71 °F

    Chance
    Sprinkles

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45. South wind 7 to 10 mph.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 78. South wind 11 to 18 mph, with gusts as high as 29 mph.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers after 1am. Partly cloudy, with a low around 37. South southwest wind 14 to 18 mph becoming north northeast after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 20%.

    Low: 37 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A chance of rain and snow showers. Mostly cloudy, with a high near 49. Breezy, with a north wind 18 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.

    High: 49 °F

    Chance
    Rain/Snow and
    Breezy

  • Friday Night

    Friday Night: A slight chance of rain and snow showers before 10pm, then a slight chance of snow showers. Mostly cloudy, with a low around 24. Blustery, with a north northwest wind 22 to 25 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.

    Low: 24 °F

    Slight Chance
    Rain/Snow and
    Blustery

  • Saturday

    Saturday: A slight chance of snow showers. Mostly cloudy, with a high near 37. Breezy, with a northwest wind 22 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.

    High: 37 °F

    Slight Chance
    Snow Showers
    and Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 23. Blustery, with a northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 32 mph.

    Low: 23 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 40. East northeast wind 5 to 7 mph becoming south southeast after midnight.
Wednesday
A chance of sprinkles before 9am. Mostly sunny, with a high near 71. South southeast wind 6 to 9 mph becoming west in the morning.
Wednesday Night
Mostly clear, with a low around 45. South wind 7 to 10 mph.
Thursday
Sunny, with a high near 78. South wind 11 to 18 mph, with gusts as high as 29 mph.
Thursday Night
A slight chance of showers after 1am. Partly cloudy, with a low around 37. South southwest wind 14 to 18 mph becoming north northeast after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 20%.
Friday
A chance of rain and snow showers. Mostly cloudy, with a high near 49. Breezy, with a north wind 18 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.
Friday Night
A slight chance of rain and snow showers before 10pm, then a slight chance of snow showers. Mostly cloudy, with a low around 24. Blustery, with a north northwest wind 22 to 25 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.
Saturday
A slight chance of snow showers. Mostly cloudy, with a high near 37. Breezy, with a northwest wind 22 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 23. Blustery, with a northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 32 mph.
Sunday
Sunny, with a high near 48.
Sunday Night
Mostly clear, with a low around 30.
Monday
Sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Mostly sunny, with a high near 68.
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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:
9:36 pm CDT Apr 14, 2026
Forecast Valid:
10pm CDT Apr 14, 2026-6pm CDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation