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

29°F

-2°C

Humidity 47%
Wind Speed NE 15 mph
Barometer 30.49 in (1034.7 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 6 Apr 11:53 am CDT
Extended Forecast for

Watertown Municipal Airport SD

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 31. North wind around 14 mph.

    High: 31 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 16. North northeast wind 6 to 11 mph becoming east after midnight.

    Low: 16 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 40. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 40 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 31. Breezy, with a south wind 18 to 20 mph, with gusts as high as 32 mph.

    Low: 31 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Wednesday

    Wednesday: A slight chance of rain before 1pm. Partly sunny, with a high near 53. Breezy, with a south southwest wind 13 to 23 mph becoming west northwest in the morning. Winds could gust as high as 36 mph. Chance of precipitation is 20%.

    High: 53 °F

    Slight Chance
    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 25. Breezy, with a west wind 13 to 20 mph, with gusts as high as 31 mph.

    Low: 25 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 45. West northwest wind 11 to 13 mph.

    High: 45 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 25. North northwest wind 5 to 9 mph becoming light and variable in the evening.

    Low: 25 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of rain and snow before 1pm, then a slight chance of rain. Mostly sunny, with a high near 53. East southeast wind 5 to 9 mph. Chance of precipitation is 20%.

    High: 53 °F

    Slight Chance
    Rain/Snow

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 31. North wind around 14 mph.
Tonight
Partly cloudy, with a low around 16. North northeast wind 6 to 11 mph becoming east after midnight.
Tuesday
Mostly sunny, with a high near 40. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly cloudy, with a low around 31. Breezy, with a south wind 18 to 20 mph, with gusts as high as 32 mph.
Wednesday
A slight chance of rain before 1pm. Partly sunny, with a high near 53. Breezy, with a south southwest wind 13 to 23 mph becoming west northwest in the morning. Winds could gust as high as 36 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 25. Breezy, with a west wind 13 to 20 mph, with gusts as high as 31 mph.
Thursday
Mostly sunny, with a high near 45. West northwest wind 11 to 13 mph.
Thursday Night
Partly cloudy, with a low around 25. North northwest wind 5 to 9 mph becoming light and variable in the evening.
Friday
A slight chance of rain and snow before 1pm, then a slight chance of rain. Mostly sunny, with a high near 53. East southeast wind 5 to 9 mph. Chance of precipitation is 20%.
Friday Night
A slight chance of rain after 1am. Mostly cloudy, with a low around 36. Chance of precipitation is 20%.
Saturday
A chance of rain. Mostly cloudy, with a high near 60. Chance of precipitation is 40%.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.
Sunday
A chance of rain. Partly sunny, with a high near 69. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Watertown Municipal Airport SD
 44.91°N 97.14°W (Elev. 1736 ft)
Last Update:
11:36 am CDT Apr 6, 2026
Forecast Valid:
12pm CDT Apr 6, 2026-6pm CDT Apr 12, 2026
 
Forecast Discussion
 
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