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

22°F

-6°C

Humidity 89%
Wind Speed SE 6 mph
Barometer 29.72 in (1009.3 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 18 Mar 12:53 am CDT
Extended Forecast for

Watertown SD

  • Overnight

    Overnight: Partly cloudy, with a low around 21. Southwest wind around 8 mph.

    Low: 21 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 45. West southwest wind 8 to 10 mph.

    High: 45 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 31. Southwest wind 5 to 9 mph becoming light and variable.

    Low: 31 °F

    Mostly Cloudy

  • Thursday

    Thursday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 52. Northwest wind 5 to 10 mph becoming southwest in the afternoon.

    High: 52 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 36. South southwest wind around 10 mph.

    Low: 36 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 64. West northwest wind 9 to 14 mph, with gusts as high as 23 mph.

    High: 64 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 40. West wind around 10 mph becoming south southwest after midnight.

    Low: 40 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 66. West southwest wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 66 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 31. North wind around 14 mph, with gusts as high as 23 mph.

    Low: 31 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 21. Southwest wind around 8 mph.
Wednesday
Partly sunny, with a high near 45. West southwest wind 8 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 31. Southwest wind 5 to 9 mph becoming light and variable.
Thursday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 52. Northwest wind 5 to 10 mph becoming southwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 36. South southwest wind around 10 mph.
Friday
Mostly sunny, with a high near 64. West northwest wind 9 to 14 mph, with gusts as high as 23 mph.
Friday Night
Partly cloudy, with a low around 40. West wind around 10 mph becoming south southwest after midnight.
Saturday
Mostly sunny, with a high near 66. West southwest wind 10 to 16 mph, with gusts as high as 25 mph.
Saturday Night
Mostly cloudy, with a low around 31. North wind around 14 mph, with gusts as high as 23 mph.
Sunday
Mostly sunny, with a high near 42.
Sunday Night
Partly cloudy, with a low around 21.
Monday
Partly sunny, with a high near 44.
Monday Night
Mostly cloudy, with a low around 27.
Tuesday
Partly sunny, with a high near 49.
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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:
12:26 am CDT Mar 18, 2026
Forecast Valid:
1am CDT Mar 18, 2026-6pm CDT Mar 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation