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

32°F

0°C

Humidity 66%
Wind Speed N 20 G 26 mph
Barometer 30.24 in (1026.0 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 22 Mar 2:53 pm CDT
Extended Forecast for

Watertown SD

  • This Afternoon

    This Afternoon: Mostly cloudy, with a steady temperature around 32. North northwest wind around 18 mph, with gusts as high as 30 mph.

    High: 32 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 22. North wind 8 to 13 mph becoming light and variable in the evening. Winds could gust as high as 21 mph.

    Low: 22 °F

    Decreasing
    Clouds

  • Monday

    Monday: A slight chance of rain after 4pm. Partly sunny, with a high near 51. South wind 5 to 10 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 20%.

    High: 51 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: A chance of rain, mainly between 7pm and 10pm. Mostly cloudy, with a low around 32. South wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    Low: 32 °F

    Chance Rain
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 57. Southeast wind around 11 mph.

    High: 57 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35. East wind 7 to 9 mph.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 62. Northeast wind around 10 mph becoming south in the afternoon.

    High: 62 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain after 1am. Mostly cloudy, with a low around 36. South wind 8 to 11 mph becoming north northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    Low: 36 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 48. Breezy, with a north wind 14 to 22 mph, with gusts as high as 32 mph.

    High: 48 °F

    Mostly Sunny
    and Breezy

Detailed Forecast

This Afternoon
Mostly cloudy, with a steady temperature around 32. North northwest wind around 18 mph, with gusts as high as 30 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 22. North wind 8 to 13 mph becoming light and variable in the evening. Winds could gust as high as 21 mph.
Monday
A slight chance of rain after 4pm. Partly sunny, with a high near 51. South wind 5 to 10 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 20%.
Monday Night
A chance of rain, mainly between 7pm and 10pm. Mostly cloudy, with a low around 32. South wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Tuesday
Mostly cloudy, with a high near 57. Southeast wind around 11 mph.
Tuesday Night
Mostly cloudy, with a low around 35. East wind 7 to 9 mph.
Wednesday
Partly sunny, with a high near 62. Northeast wind around 10 mph becoming south in the afternoon.
Wednesday Night
A slight chance of rain after 1am. Mostly cloudy, with a low around 36. South wind 8 to 11 mph becoming north northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 48. Breezy, with a north wind 14 to 22 mph, with gusts as high as 32 mph.
Thursday Night
Partly cloudy, with a low around 16.
Friday
Sunny, with a high near 41.
Friday Night
Mostly clear, with a low around 24.
Saturday
Sunny, with a high near 53.
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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:
3:36 pm CDT Mar 22, 2026
Forecast Valid:
3pm CDT Mar 22, 2026-6pm CDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation