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

57°F

14°C

Humidity 36%
Wind Speed S 5 mph
Barometer 29.84 in (1011.1 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 29 Mar 12:53 pm CDT
Extended Forecast for

Watertown SD

  • This Afternoon

    This Afternoon: Sunny, with a high near 68. Southwest wind around 8 mph becoming northwest.

    High: 68 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 35. North wind 7 to 10 mph becoming east northeast after midnight.

    Low: 35 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly sunny, with a high near 68. East northeast wind 10 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph.

    High: 68 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A slight chance of rain before 2am, then a slight chance of rain after 3am. Mostly cloudy, with a low around 34. Breezy, with a north wind 10 to 15 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 20%.

    Low: 34 °F

    Partly Cloudy
    then Slight
    Chance Rain
    and Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 43. Breezy, with a north northwest wind 20 to 23 mph, with gusts as high as 34 mph.

    High: 43 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 20. Northeast wind 10 to 16 mph, with gusts as high as 25 mph.

    Low: 20 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of snow after 1pm. Mostly cloudy, with a high near 39. East wind 9 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    High: 39 °F

    Mostly Cloudy
    then Chance
    Snow

  • Wednesday Night

    Wednesday Night: A chance of snow. Mostly cloudy, with a low around 26. East wind around 15 mph. Chance of precipitation is 50%.

    Low: 26 °F

    Chance Snow

  • Thursday

    Thursday: A chance of snow. Mostly cloudy, with a high near 42. Breezy, with an east southeast wind 14 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.

    High: 42 °F

    Chance Snow
    and Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 68. Southwest wind around 8 mph becoming northwest.
Tonight
Increasing clouds, with a low around 35. North wind 7 to 10 mph becoming east northeast after midnight.
Monday
Mostly sunny, with a high near 68. East northeast wind 10 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph.
Monday Night
A slight chance of rain before 2am, then a slight chance of rain after 3am. Mostly cloudy, with a low around 34. Breezy, with a north wind 10 to 15 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 43. Breezy, with a north northwest wind 20 to 23 mph, with gusts as high as 34 mph.
Tuesday Night
Mostly cloudy, with a low around 20. Northeast wind 10 to 16 mph, with gusts as high as 25 mph.
Wednesday
A chance of snow after 1pm. Mostly cloudy, with a high near 39. East wind 9 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 26. East wind around 15 mph. Chance of precipitation is 50%.
Thursday
A chance of snow. Mostly cloudy, with a high near 42. Breezy, with an east southeast wind 14 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 27. Chance of precipitation is 30%.
Friday
Rain and snow likely. Mostly cloudy, with a high near 44. Chance of precipitation is 60%.
Friday Night
Rain and snow likely. Mostly cloudy, with a low around 28. Chance of precipitation is 60%.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 40. Breezy. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Watertown SD
 44.91°N 97.14°W (Elev. 1736 ft)
Last Update:
12:36 pm CDT Mar 29, 2026
Forecast Valid:
1pm CDT Mar 29, 2026-6pm CDT Apr 4, 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