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

16°F

-9°C

Humidity 77%
Wind Speed NE 6 mph
Barometer 30.41 in (1032.6 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 7 Apr 2:53 am CDT
Extended Forecast for

Watertown SD

  • Overnight

    Overnight: Mostly clear, with a low around 15. East wind around 7 mph.

    Low: 15 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 41. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 41 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: A slight chance of rain after 4am. Mostly cloudy, with a low around 32. Breezy, with a south wind 18 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.

    Low: 32 °F

    Breezy.
    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: A slight chance of rain before 1pm. Partly sunny, with a high near 51. Breezy, with a south southwest wind 10 to 15 mph becoming west 17 to 22 mph in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 20%.

    High: 51 °F

    Slight Chance
    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 25. Blustery, with a west northwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 32 mph.

    Low: 25 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

  • Thursday

    Thursday: A chance of snow after 1pm. Partly sunny, with a high near 43. North northwest wind around 7 mph. Chance of precipitation is 30%.

    High: 43 °F

    Mostly Sunny
    then Chance
    Snow

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 25. North northwest wind around 6 mph becoming calm in the evening.

    Low: 25 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 54. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 54 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 35. East southeast wind 6 to 10 mph.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 15. East wind around 7 mph.
Tuesday
Increasing clouds, with a high near 41. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
A slight chance of rain after 4am. Mostly cloudy, with a low around 32. Breezy, with a south wind 18 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.
Wednesday
A slight chance of rain before 1pm. Partly sunny, with a high near 51. Breezy, with a south southwest wind 10 to 15 mph becoming west 17 to 22 mph in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 25. Blustery, with a west northwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 32 mph.
Thursday
A chance of snow after 1pm. Partly sunny, with a high near 43. North northwest wind around 7 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 25. North northwest wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 54. Calm wind becoming west northwest around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 35. East southeast wind 6 to 10 mph.
Saturday
A chance of rain. Mostly cloudy, with a high near 59. Breezy. Chance of precipitation is 40%.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 50. Chance of precipitation is 50%.
Sunday
A chance of rain. Mostly cloudy, with a high near 70. Chance of precipitation is 50%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 44. Chance of precipitation is 50%.
Monday
A chance of rain. Partly sunny, with a high near 57. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
Watertown SD
 44.91°N 97.14°W (Elev. 1736 ft)
Last Update:
2:36 am CDT Apr 7, 2026
Forecast Valid:
3am CDT Apr 7, 2026-6pm CDT Apr 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation