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

58°F

14°C

Humidity 65%
Wind Speed W 10 mph
Barometer 29.58 in (1001.6 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 17 Oct 6:53 pm CDT
Extended Forecast for

Watertown SD

  • Tonight

    Tonight: Mostly cloudy, with a low around 45. West northwest wind 8 to 10 mph.

    Low: 45 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers, mainly between 1pm and 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 54. Breezy, with a northwest wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 30%.

    High: 54 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34. West northwest wind 10 to 16 mph, with gusts as high as 24 mph.

    Low: 34 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 57. West wind 9 to 13 mph, with gusts as high as 21 mph.

    High: 57 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 43. South wind around 11 mph, with gusts as high as 20 mph.

    Low: 43 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 58. Breezy, with a west northwest wind 15 to 23 mph, with gusts as high as 37 mph.

    High: 58 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35. Breezy, with a west northwest wind 17 to 21 mph, with gusts as high as 32 mph.

    Low: 35 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 50. Northwest wind 11 to 16 mph, with gusts as high as 25 mph.

    High: 50 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 33. Northwest wind 5 to 7 mph becoming south southeast after midnight.

    Low: 33 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 45. West northwest wind 8 to 10 mph.
Saturday
A chance of showers, mainly between 1pm and 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 54. Breezy, with a northwest wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 34. West northwest wind 10 to 16 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 57. West wind 9 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 43. South wind around 11 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 58. Breezy, with a west northwest wind 15 to 23 mph, with gusts as high as 37 mph.
Monday Night
Partly cloudy, with a low around 35. Breezy, with a west northwest wind 17 to 21 mph, with gusts as high as 32 mph.
Tuesday
Sunny, with a high near 50. Northwest wind 11 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 33. Northwest wind 5 to 7 mph becoming south southeast after midnight.
Wednesday
Mostly sunny, with a high near 60.
Wednesday Night
Partly cloudy, with a low around 36.
Thursday
Sunny, with a high near 59.
Thursday Night
Mostly clear, with a low around 37.
Friday
Sunny, with a high near 65.
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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:
6:36 pm CDT Oct 17, 2025
Forecast Valid:
7pm CDT Oct 17, 2025-6pm CDT Oct 24, 2025
 
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Additional Resources

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Chance of Precipitation