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

66°F

19°C

Humidity 32%
Wind Speed NW 12 mph
Barometer 30.30 in (1026.3 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 4 Oct 1:53 pm CDT
Extended Forecast for

Watertown SD

  • This Afternoon

    This Afternoon: Sunny, with a high near 67. West northwest wind around 15 mph, with gusts as high as 26 mph.

    High: 67 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 41. Calm wind becoming southeast around 5 mph after midnight.

    Low: 41 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 72. Breezy, with a south wind 8 to 13 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 34 mph.

    High: 72 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 53. Breezy, with a south wind 11 to 20 mph, with gusts as high as 37 mph.

    Low: 53 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75. West southwest wind 8 to 11 mph becoming northwest in the afternoon.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 49. Northwest wind 3 to 5 mph.

    Low: 49 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 70. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 70 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 47. Northwest wind around 6 mph becoming light and variable in the evening.

    Low: 47 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 67. Light southeast wind becoming east 5 to 10 mph in the morning.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 67. West northwest wind around 15 mph, with gusts as high as 26 mph.
Tonight
Mostly clear, with a low around 41. Calm wind becoming southeast around 5 mph after midnight.
Monday
Sunny, with a high near 72. Breezy, with a south wind 8 to 13 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 34 mph.
Monday Night
Mostly clear, with a low around 53. Breezy, with a south wind 11 to 20 mph, with gusts as high as 37 mph.
Tuesday
Sunny, with a high near 75. West southwest wind 8 to 11 mph becoming northwest in the afternoon.
Tuesday Night
Mostly clear, with a low around 49. Northwest wind 3 to 5 mph.
Wednesday
Mostly sunny, with a high near 70. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 47. Northwest wind around 6 mph becoming light and variable in the evening.
Thursday
Mostly sunny, with a high near 67. Light southeast wind becoming east 5 to 10 mph in the morning.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 68.
Friday Night
Mostly clear, with a low around 56. Breezy.
Saturday
Sunny, with a high near 75. Breezy.
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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:
2:21 pm CDT Oct 4, 2026
Forecast Valid:
2pm CDT Oct 4, 2026-6pm CDT Oct 10, 2026
 
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Additional Resources

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