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 90%
Wind Speed SE 8 mph
Barometer 30.14 in (1020.3 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 10 Sep 10:53 pm CDT
Extended Forecast for

Watertown SD

  • Tonight

    Tonight: Partly cloudy, with a low around 59. Southeast wind 7 to 10 mph.

    Low: 59 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 78. South southeast wind 10 to 16 mph, with gusts as high as 28 mph.

    High: 78 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 64. Southeast wind around 14 mph, with gusts as high as 25 mph.

    Low: 64 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 84. South southeast wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 84 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 64. East southeast wind around 6 mph.

    Low: 64 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 85. East wind 7 to 13 mph, with gusts as high as 22 mph.

    High: 85 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 81. South wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

    High: 81 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 60. South wind 7 to 10 mph. Chance of precipitation is 40%.

    Low: 60 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 59. Southeast wind 7 to 10 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 78. South southeast wind 10 to 16 mph, with gusts as high as 28 mph.
Thursday Night
Partly cloudy, with a low around 64. Southeast wind around 14 mph, with gusts as high as 25 mph.
Friday
Mostly sunny, with a high near 84. South southeast wind 9 to 11 mph, with gusts as high as 21 mph.
Friday Night
Mostly cloudy, with a low around 64. East southeast wind around 6 mph.
Saturday
Partly sunny, with a high near 85. East wind 7 to 13 mph, with gusts as high as 22 mph.
Saturday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Sunday
A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 81. South wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 60. South wind 7 to 10 mph. Chance of precipitation is 40%.
Monday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. Chance of precipitation is 20%.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 20%.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82. Chance of precipitation is 20%.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 79. Chance of precipitation is 30%.
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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:
11:45 pm CDT Sep 10, 2025
Forecast Valid:
11pm CDT Sep 10, 2025-6pm CDT Sep 17, 2025
 
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Additional Resources

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Chance of Precipitation