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.

Overcast

60°F

16°C

Humidity 67%
Wind Speed SE 9 G 18 mph
Barometer 30.29 in (1026.0 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 22 Sep 12:53 pm CDT
Extended Forecast for

Watertown SD

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 60. Southeast wind around 10 mph, with gusts as high as 23 mph.

    High: 60 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 49. East southeast wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 49 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 63. South southeast wind 14 to 18 mph, with gusts as high as 31 mph.

    High: 63 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely after 1am. Cloudy, with a low around 54. Breezy, with a south wind 16 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 54 °F

    Chance
    Showers and
    Breezy then
    Showers
    Likely

  • Thursday

    Thursday: A slight chance of showers before 1pm. Mostly cloudy, with a high near 66. South wind 10 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    High: 66 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 55. South southeast wind around 8 mph.

    Low: 55 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 65. Southeast wind 8 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 50%.

    High: 65 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 56. Breezy, with a south southeast wind 16 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 70%.

    Low: 56 °F

    Showers
    Likely and
    Breezy

  • Saturday

    Saturday: A slight chance of showers before 1pm. Mostly cloudy, with a high near 70. Breezy, with a south southeast wind 16 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    High: 70 °F

    Slight Chance
    Showers and
    Breezy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 60. Southeast wind around 10 mph, with gusts as high as 23 mph.
Tonight
Increasing clouds, with a low around 49. East southeast wind 10 to 13 mph, with gusts as high as 21 mph.
Wednesday
Mostly cloudy, with a high near 63. South southeast wind 14 to 18 mph, with gusts as high as 31 mph.
Wednesday Night
A chance of showers and thunderstorms, then showers likely after 1am. Cloudy, with a low around 54. Breezy, with a south wind 16 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A slight chance of showers before 1pm. Mostly cloudy, with a high near 66. South wind 10 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, with a low around 55. South southeast wind around 8 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 65. Southeast wind 8 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 50%.
Friday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 56. Breezy, with a south southeast wind 16 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 70%.
Saturday
A slight chance of showers before 1pm. Mostly cloudy, with a high near 70. Breezy, with a south southeast wind 16 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Saturday Night
Mostly cloudy, with a low around 56.
Sunday
Mostly sunny, with a high near 71.
Sunday Night
A slight chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 20%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 69. 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 97.17°W (Elev. 1755 ft)
Last Update:
1:22 pm CDT Sep 22, 2026
Forecast Valid:
1pm CDT Sep 22, 2026-6pm CDT Sep 28, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation