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

53°F

12°C

Humidity 66%
Wind Speed Calm
Barometer 30.05 in (1017.7 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 7 Oct 9:53 pm CDT
Extended Forecast for

5 Miles SE Vienna SD

  • Tonight

    Tonight: Mostly cloudy, with a low around 48. Calm wind becoming north around 5 mph.

    Low: 48 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 67. Calm wind becoming south 5 to 7 mph in the morning.

    High: 67 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 51. Southeast wind 6 to 9 mph.

    Low: 51 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy through mid morning, then gradual clearing, with a high near 77. South wind 10 to 13 mph, with gusts as high as 22 mph.

    High: 77 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 64. Breezy, with a south wind 10 to 20 mph, with gusts as high as 31 mph.

    Low: 64 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

  • Saturday

    Saturday: Sunny, with a high near 82. Breezy, with a south wind 22 to 26 mph, with gusts as high as 39 mph.

    High: 82 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Clear, with a low around 58. Breezy, with a south wind 18 to 21 mph, with gusts as high as 33 mph.

    Low: 58 °F

    Clear and
    Breezy

  • Sunday

    Sunday: Mostly sunny, with a high near 70. South wind around 18 mph becoming north in the afternoon. Winds could gust as high as 28 mph.

    High: 70 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 46. North wind 13 to 17 mph, with gusts as high as 28 mph.

    Low: 46 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 48. Calm wind becoming north around 5 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 67. Calm wind becoming south 5 to 7 mph in the morning.
Thursday Night
Partly cloudy, with a low around 51. Southeast wind 6 to 9 mph.
Friday
Mostly cloudy through mid morning, then gradual clearing, with a high near 77. South wind 10 to 13 mph, with gusts as high as 22 mph.
Friday Night
Mostly clear, with a low around 64. Breezy, with a south wind 10 to 20 mph, with gusts as high as 31 mph.
Saturday
Sunny, with a high near 82. Breezy, with a south wind 22 to 26 mph, with gusts as high as 39 mph.
Saturday Night
Clear, with a low around 58. Breezy, with a south wind 18 to 21 mph, with gusts as high as 33 mph.
Sunday
Mostly sunny, with a high near 70. South wind around 18 mph becoming north in the afternoon. Winds could gust as high as 28 mph.
Sunday Night
Mostly cloudy, with a low around 46. North wind 13 to 17 mph, with gusts as high as 28 mph.
Columbus Day
A chance of showers, mainly before 1pm. Mostly cloudy, with a high near 54. Chance of precipitation is 40%.
Monday Night
Mostly cloudy, with a low around 38.
Tuesday
Partly sunny, with a high near 55.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 41. Chance of precipitation is 20%.
Wednesday
A chance of showers. Mostly sunny, with a high near 58. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SE Vienna SD
 44.67°N 97.41°W (Elev. 1857 ft)
Last Update:
10:16 pm CDT Oct 7, 2026
Forecast Valid:
10pm CDT Oct 7, 2026-6pm CDT Oct 14, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation