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

66°F

19°C

Humidity 34%
Wind Speed NW 10 mph
Barometer 30.28 in (1025.7 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 4 Oct 2:53 pm CDT
Extended Forecast for

Vienna SD

  • This Afternoon

    This Afternoon: Sunny, with a high near 68. West northwest wind around 10 mph, with gusts as high as 22 mph.

    High: 68 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 43. Calm wind becoming southeast 5 to 7 mph after midnight.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 72. Breezy, with a southeast wind 11 to 16 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph.

    High: 72 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 54. Breezy, with a south wind 13 to 22 mph, with gusts as high as 37 mph.

    Low: 54 °F

    Mostly Clear
    and Breezy

  • Tuesday

    Tuesday: Sunny, with a high near 75. Northwest wind 8 to 10 mph.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50. North northwest wind around 5 mph.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 70. North northwest wind 6 to 11 mph.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 48. Northwest wind around 5 mph becoming east southeast after midnight.

    Low: 48 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 67. East southeast wind 6 to 9 mph.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 68. West northwest wind around 10 mph, with gusts as high as 22 mph.
Tonight
Mostly clear, with a low around 43. Calm wind becoming southeast 5 to 7 mph after midnight.
Monday
Sunny, with a high near 72. Breezy, with a southeast wind 11 to 16 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph.
Monday Night
Mostly clear, with a low around 54. Breezy, with a south wind 13 to 22 mph, with gusts as high as 37 mph.
Tuesday
Sunny, with a high near 75. Northwest wind 8 to 10 mph.
Tuesday Night
Mostly clear, with a low around 50. North northwest wind around 5 mph.
Wednesday
Sunny, with a high near 70. North northwest wind 6 to 11 mph.
Wednesday Night
Partly cloudy, with a low around 48. Northwest wind around 5 mph becoming east southeast after midnight.
Thursday
Mostly sunny, with a high near 67. East southeast wind 6 to 9 mph.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 68.
Friday Night
Mostly clear, with a low around 58. Breezy.
Saturday
Sunny, with a high near 75. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Vienna SD
 44.71°N 97.5°W (Elev. 1801 ft)
Last Update:
3:21 pm CDT Oct 4, 2026
Forecast Valid:
3pm CDT Oct 4, 2026-6pm CDT Oct 10, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation