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

39°F

4°C

Humidity 31%
Wind Speed NW 17 G 29 mph
Barometer 30.05 in (1019.4 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 18 Apr 12:53 pm CDT
Extended Forecast for

9 Miles S Ortley SD

  • This Afternoon

    This Afternoon: Sunny, with a high near 42. Breezy, with a west northwest wind 21 to 23 mph, with gusts as high as 34 mph.

    High: 42 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: A chance of rain and snow showers before 2am, then scattered flurries between 2am and 3am. Increasing clouds, with a low around 25. Blustery, with a west northwest wind 17 to 22 mph decreasing to 10 to 15 mph in the evening. Winds could gust as high as 32 mph. Chance of precipitation is 20%.

    Low: 25 °F

    Chance
    Sprinkles/Snow
    and Blustery

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 44. North northwest wind around 9 mph.

    High: 44 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 28. North wind 6 to 10 mph becoming south southeast after midnight. Winds could gust as high as 20 mph.

    Low: 28 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 67. Breezy, with a south wind 14 to 22 mph, with gusts as high as 34 mph.

    High: 67 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. Southwest wind 10 to 14 mph becoming north after midnight. Winds could gust as high as 24 mph.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 67. North northeast wind around 9 mph.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 48. Southeast wind 9 to 13 mph, with gusts as high as 22 mph.

    Low: 48 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 81. Breezy, with a south wind 14 to 22 mph, with gusts as high as 33 mph.

    High: 81 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 42. Breezy, with a west northwest wind 21 to 23 mph, with gusts as high as 34 mph.
Tonight
A chance of rain and snow showers before 2am, then scattered flurries between 2am and 3am. Increasing clouds, with a low around 25. Blustery, with a west northwest wind 17 to 22 mph decreasing to 10 to 15 mph in the evening. Winds could gust as high as 32 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 44. North northwest wind around 9 mph.
Sunday Night
Mostly clear, with a low around 28. North wind 6 to 10 mph becoming south southeast after midnight. Winds could gust as high as 20 mph.
Monday
Mostly sunny, with a high near 67. Breezy, with a south wind 14 to 22 mph, with gusts as high as 34 mph.
Monday Night
Mostly clear, with a low around 40. Southwest wind 10 to 14 mph becoming north after midnight. Winds could gust as high as 24 mph.
Tuesday
Sunny, with a high near 67. North northeast wind around 9 mph.
Tuesday Night
Mostly clear, with a low around 48. Southeast wind 9 to 13 mph, with gusts as high as 22 mph.
Wednesday
Mostly sunny, with a high near 81. Breezy, with a south wind 14 to 22 mph, with gusts as high as 33 mph.
Wednesday Night
A chance of showers, mainly after 1am. Partly cloudy, with a low around 57. Breezy. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 74. Breezy. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 35. Breezy. Chance of precipitation is 40%.
Friday
A chance of rain and snow showers. Partly sunny, with a high near 49. Breezy. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles S Ortley SD
 45.21°N 97.24°W (Elev. 1900 ft)
Last Update:
12:36 pm CDT Apr 18, 2026
Forecast Valid:
1pm CDT Apr 18, 2026-6pm CDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation