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 54%
Wind Speed SW 8 mph
Barometer 29.89 in (1012.5 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 20 Mar 3:53 pm CDT
Extended Forecast for

3 Miles ESE Watertown Municipal Airport SD

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 70. West northwest wind around 8 mph.

    High: 70 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 43. Northwest wind 5 to 9 mph becoming southeast in the evening.

    Low: 43 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 77. South southwest wind around 10 mph becoming west in the afternoon.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 31. Blustery, with a north northeast wind 13 to 22 mph, with gusts as high as 36 mph.

    Low: 31 °F

    Increasing
    Clouds and
    Blustery

  • Sunday

    Sunday: Partly sunny, with a high near 43. North wind 13 to 15 mph, with gusts as high as 25 mph.

    High: 43 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 24. North northwest wind 5 to 10 mph becoming east northeast after midnight.

    Low: 24 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, with a high near 50. South wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 50 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 31. South wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 31 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 53. East northeast wind 9 to 13 mph.

    High: 53 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 70. West northwest wind around 8 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 43. Northwest wind 5 to 9 mph becoming southeast in the evening.
Saturday
Mostly sunny, with a high near 77. South southwest wind around 10 mph becoming west in the afternoon.
Saturday Night
Increasing clouds, with a low around 31. Blustery, with a north northeast wind 13 to 22 mph, with gusts as high as 36 mph.
Sunday
Partly sunny, with a high near 43. North wind 13 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 24. North northwest wind 5 to 10 mph becoming east northeast after midnight.
Monday
Partly sunny, with a high near 50. South wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 31. South wind 10 to 13 mph, with gusts as high as 21 mph.
Tuesday
Partly sunny, with a high near 53. East northeast wind 9 to 13 mph.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Mostly cloudy, with a high near 58.
Wednesday Night
Mostly cloudy, with a low around 35.
Thursday
Mostly sunny, with a high near 46. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Watertown Municipal Airport SD
 44.91°N 97.11°W (Elev. 1752 ft)
Last Update:
2:36 pm CDT Mar 20, 2026
Forecast Valid:
4pm CDT Mar 20, 2026-6pm CDT Mar 26, 2026
 
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