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

63°F

17°C

Humidity 34%
Wind Speed SE 5 mph
Barometer 29.77 in (1008.3 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 25 Mar 11:53 am CDT
Extended Forecast for

Watertown SD

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 73. West northwest wind 3 to 8 mph.

    High: 73 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of rain, mainly between 1am and 4am. Mostly cloudy, with a low around 36. North northwest wind 5 to 13 mph becoming east in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 30%.

    Low: 36 °F

    Partly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: A slight chance of rain and snow before 1pm, then a slight chance of rain between 1pm and 3pm. Mostly cloudy, with a temperature falling to around 37 by 9am. Breezy, with a north wind 16 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    High: 41 °F⇓

    Breezy.
    Slight Chance
    Rain then
    Slight Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 18. North wind 10 to 15 mph, with gusts as high as 23 mph.

    Low: 18 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 38. North northwest wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 38 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 24. West northwest wind 7 to 13 mph becoming south after midnight. Winds could gust as high as 21 mph.

    Low: 24 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 55. South wind 14 to 16 mph, with gusts as high as 25 mph.

    High: 55 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 34. South southeast wind around 11 mph.

    Low: 34 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 67. South wind 11 to 15 mph, with gusts as high as 23 mph.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 73. West northwest wind 3 to 8 mph.
Tonight
A chance of rain, mainly between 1am and 4am. Mostly cloudy, with a low around 36. North northwest wind 5 to 13 mph becoming east in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 30%.
Thursday
A slight chance of rain and snow before 1pm, then a slight chance of rain between 1pm and 3pm. Mostly cloudy, with a temperature falling to around 37 by 9am. Breezy, with a north wind 16 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 18. North wind 10 to 15 mph, with gusts as high as 23 mph.
Friday
Sunny, with a high near 38. North northwest wind 10 to 14 mph, with gusts as high as 22 mph.
Friday Night
Mostly clear, with a low around 24. West northwest wind 7 to 13 mph becoming south after midnight. Winds could gust as high as 21 mph.
Saturday
Mostly sunny, with a high near 55. South wind 14 to 16 mph, with gusts as high as 25 mph.
Saturday Night
Partly cloudy, with a low around 34. South southeast wind around 11 mph.
Sunday
Mostly sunny, with a high near 67. South wind 11 to 15 mph, with gusts as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Partly sunny, with a high near 65.
Monday Night
Mostly cloudy, with a low around 42.
Tuesday
A slight chance of rain. Partly sunny, with a high near 65. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Watertown SD
 44.91°N 97.14°W (Elev. 1736 ft)
Last Update:
11:46 am CDT Mar 25, 2026
Forecast Valid:
12pm CDT Mar 25, 2026-6pm CDT Mar 31, 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