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

61°F

16°C

Humidity 38%
Wind Speed S 5 mph
Barometer 29.83 in (1010.6 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 29 Mar 7:53 pm CDT
Extended Forecast for

Watertown SD

  • Tonight

    Tonight: Partly cloudy, with a low around 35. Calm wind becoming east northeast 5 to 9 mph after midnight.

    Low: 35 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 68. East northeast wind 9 to 13 mph becoming west in the afternoon.

    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, with gusts as high as 23 mph. Chance of precipitation is 40%.

    Low: 26 °F

    Chance Snow

  • Thursday

    Thursday: A chance of snow. Mostly cloudy, with a high near 42. Breezy, with an east southeast wind 15 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.

    High: 42 °F

    Chance Snow
    and Breezy

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 27. Breezy, with a southeast wind 16 to 21 mph. Chance of precipitation is 30%.

    Low: 27 °F

    Chance Snow
    and Breezy

Detailed Forecast

Tonight
Partly cloudy, with a low around 35. Calm wind becoming east northeast 5 to 9 mph after midnight.
Monday
Mostly sunny, with a high near 68. East northeast wind 9 to 13 mph becoming west in the afternoon.
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, with gusts as high as 23 mph. Chance of precipitation is 40%.
Thursday
A chance of snow. Mostly cloudy, with a high near 42. Breezy, with an east southeast wind 15 to 21 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. Breezy, with a southeast wind 16 to 21 mph. Chance of precipitation is 30%.
Friday
A chance of rain and snow before 1pm, then rain likely. Mostly cloudy, with a high near 44. Breezy. 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%.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 23. Blustery. Chance of precipitation is 30%.
Sunday
A slight chance of snow. Mostly sunny, with a high near 42. Breezy. Chance of precipitation is 20%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Watertown SD
 44.91°N 97.14°W (Elev. 1736 ft)
Last Update:
8:36 pm CDT Mar 29, 2026
Forecast Valid:
8pm CDT Mar 29, 2026-6pm CDT Apr 5, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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