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Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

45°F

7°C

Humidity 34%
Wind Speed S 20 G 29 mph
Barometer 30.05 in (1019.0 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 20 Apr 9:53 am CDT
Extended Forecast for

4 Miles W Vienna SD

Red Flag Warning April 20, 11:00am until April 20, 08:00pm
Click here for hazard details and duration
Red Flag Warning

  • Today

    Today: Mostly sunny, with a high near 69. Breezy, with a south southwest wind 21 to 24 mph, with gusts as high as 33 mph.

    High: 69 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 40. South southwest wind 6 to 10 mph becoming northeast after midnight.

    Low: 40 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 75. East southeast wind around 10 mph.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53. East southeast wind 10 to 16 mph, with gusts as high as 25 mph.

    Low: 53 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 85. Breezy, with a south southeast wind 16 to 26 mph, with gusts as high as 37 mph.

    High: 85 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 57. Breezy, with a south southeast wind 25 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 57 °F

    Breezy.
    Slight Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: A chance of showers. Mostly sunny, with a high near 71. Breezy, with a south wind 24 to 29 mph becoming west southwest in the afternoon. Winds could gust as high as 43 mph. Chance of precipitation is 30%.

    High: 71 °F

    Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: A slight chance of showers before 1am. Partly cloudy, with a low around 35. Windy, with a west wind 28 to 31 mph, with gusts as high as 41 mph. Chance of precipitation is 20%.

    Low: 35 °F

    Slight Chance
    Showers and
    Windy

  • Friday

    Friday: Partly sunny, with a high near 52. Breezy, with a west northwest wind 25 to 29 mph, with gusts as high as 37 mph.

    High: 52 °F

    Partly Sunny
    and Breezy

Detailed Forecast

Today
Mostly sunny, with a high near 69. Breezy, with a south southwest wind 21 to 24 mph, with gusts as high as 33 mph.
Tonight
Partly cloudy, with a low around 40. South southwest wind 6 to 10 mph becoming northeast after midnight.
Tuesday
Sunny, with a high near 75. East southeast wind around 10 mph.
Tuesday Night
Mostly clear, with a low around 53. East southeast wind 10 to 16 mph, with gusts as high as 25 mph.
Wednesday
Mostly sunny, with a high near 85. Breezy, with a south southeast wind 16 to 26 mph, with gusts as high as 37 mph.
Wednesday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 57. Breezy, with a south southeast wind 25 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A chance of showers. Mostly sunny, with a high near 71. Breezy, with a south wind 24 to 29 mph becoming west southwest in the afternoon. Winds could gust as high as 43 mph. Chance of precipitation is 30%.
Thursday Night
A slight chance of showers before 1am. Partly cloudy, with a low around 35. Windy, with a west wind 28 to 31 mph, with gusts as high as 41 mph. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 52. Breezy, with a west northwest wind 25 to 29 mph, with gusts as high as 37 mph.
Friday Night
Partly cloudy, with a low around 30. Blustery.
Saturday
Partly sunny, with a high near 51. Breezy.
Saturday Night
Mostly cloudy, with a low around 30.
Sunday
A slight chance of rain and snow showers. Partly sunny, with a high near 53. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Vienna SD
 44.69°N 97.59°W (Elev. 1759 ft)
Last Update:
9:37 am CDT Apr 20, 2026
Forecast Valid:
10am CDT Apr 20, 2026-6pm CDT Apr 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation