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.

Fog/Mist

34°F

1°C

Humidity 100%
Wind Speed Calm
Barometer 29.96 in (1015.7 mb)
Dewpoint 34°F (1°C)
Visibility 1.00 mi
Last update 19 Mar 1:53 am CDT
Extended Forecast for

Watertown SD

  • Overnight

    Overnight: Patchy fog before 4am. Otherwise, mostly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Patchy Fog

  • Thursday

    Thursday: Areas of fog between 9am and 11am. Widespread dense freezing fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 57. Light and variable wind becoming southwest 9 to 14 mph in the morning.

    High: 57 °F

    Dense
    Freezing Fog
    and Areas Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 38. West southwest wind 8 to 10 mph.

    Low: 38 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 63. West northwest wind 6 to 13 mph.

    High: 63 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 39. West wind 6 to 9 mph becoming south after midnight.

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 70. West wind 10 to 13 mph, with gusts as high as 21 mph.

    High: 70 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain and snow between 1am and 4am, then a slight chance of snow after 4am. Mostly cloudy, with a low around 32. North northeast wind 11 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    Low: 32 °F

    Partly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Sunday

    Sunday: Partly sunny, with a high near 42. North northwest wind 15 to 18 mph, with gusts as high as 28 mph.

    High: 42 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 21. North wind 6 to 11 mph becoming east after midnight.

    Low: 21 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog before 4am. Otherwise, mostly cloudy, with a low around 30. Calm wind.
Thursday
Areas of fog between 9am and 11am. Widespread dense freezing fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 57. Light and variable wind becoming southwest 9 to 14 mph in the morning.
Thursday Night
Partly cloudy, with a low around 38. West southwest wind 8 to 10 mph.
Friday
Mostly sunny, with a high near 63. West northwest wind 6 to 13 mph.
Friday Night
Partly cloudy, with a low around 39. West wind 6 to 9 mph becoming south after midnight.
Saturday
Mostly sunny, with a high near 70. West wind 10 to 13 mph, with gusts as high as 21 mph.
Saturday Night
A slight chance of rain and snow between 1am and 4am, then a slight chance of snow after 4am. Mostly cloudy, with a low around 32. North northeast wind 11 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, with a high near 42. North northwest wind 15 to 18 mph, with gusts as high as 28 mph.
Sunday Night
Mostly clear, with a low around 21. North wind 6 to 11 mph becoming east after midnight.
Monday
Partly sunny, with a high near 45.
Monday Night
Mostly cloudy, with a low around 30.
Tuesday
Mostly cloudy, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Partly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Watertown SD
 44.91°N 97.14°W (Elev. 1736 ft)
Last Update:
1:31 am CDT Mar 19, 2026
Forecast Valid:
2am CDT Mar 19, 2026-6pm CDT Mar 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation