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.

Overcast

44°F

7°C

Humidity 40%
Wind Speed NW 15 G 24 mph
Barometer 29.90 in (1013.7 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 5 May 1:53 pm CDT
Extended Forecast for

Watertown SD

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 45. Northwest wind around 17 mph.

    High: 45 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 26. North northwest wind 5 to 14 mph, with gusts as high as 22 mph.

    Low: 26 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Increasing clouds, with a high near 49. West northwest wind 5 to 13 mph, with gusts as high as 21 mph.

    High: 49 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 31. West northwest wind 6 to 11 mph becoming light and variable.

    Low: 31 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 61. South southwest wind 6 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 61 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 39. West northwest wind 6 to 8 mph becoming east southeast in the evening.

    Low: 39 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 65. West southwest wind 6 to 15 mph becoming northwest in the morning. Winds could gust as high as 25 mph.

    High: 65 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 39. Northwest wind 5 to 11 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 64. North wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 64 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 45. Northwest wind around 17 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 26. North northwest wind 5 to 14 mph, with gusts as high as 22 mph.
Wednesday
Increasing clouds, with a high near 49. West northwest wind 5 to 13 mph, with gusts as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 31. West northwest wind 6 to 11 mph becoming light and variable.
Thursday
Sunny, with a high near 61. South southwest wind 6 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 39. West northwest wind 6 to 8 mph becoming east southeast in the evening.
Friday
Mostly sunny, with a high near 65. West southwest wind 6 to 15 mph becoming northwest in the morning. Winds could gust as high as 25 mph.
Friday Night
Partly cloudy, with a low around 39. Northwest wind 5 to 11 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Saturday
Mostly cloudy, with a high near 64. North wind 8 to 14 mph, with gusts as high as 22 mph.
Saturday Night
Mostly cloudy, with a low around 35.
Sunday
Mostly sunny, with a high near 59.
Sunday Night
Partly cloudy, with a low around 35.
Monday
Mostly sunny, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Watertown SD
 44.91°N 97.17°W (Elev. 1755 ft)
Last Update:
2:36 pm CDT May 5, 2026
Forecast Valid:
2pm CDT May 5, 2026-6pm CDT May 11, 2026
 
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Additional Resources

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