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.

Mostly Cloudy and Breezy

26°F

-3°C

Humidity 66%
Wind Speed NW 24 G 38 mph
Barometer 29.94 in (1015.7 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 18 Apr 5:53 am CDT
Extended Forecast for

Watertown SD

  • Today

    Today: Sunny, with a high near 45. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 31 mph.

    High: 45 °F

    Sunny then
    Sunny and
    Breezy

  • Tonight

    Tonight: A slight chance of showers between midnight and 2am. Partly cloudy, with a low around 25. West northwest wind 8 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

    Low: 25 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 47. North northwest wind 8 to 10 mph.

    High: 47 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 28. North wind 6 to 10 mph becoming south southeast after midnight.

    Low: 28 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 68. Breezy, with a south wind 13 to 21 mph, with gusts as high as 32 mph.

    High: 68 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. South southwest wind 8 to 14 mph becoming north after midnight. Winds could gust as high as 23 mph.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 70. North northeast wind around 8 mph.

    High: 70 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 48. East wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 48 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 82. Breezy, with a south wind 13 to 22 mph, with gusts as high as 32 mph.

    High: 82 °F

    Sunny then
    Mostly Sunny
    and Breezy

Detailed Forecast

Today
Sunny, with a high near 45. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 31 mph.
Tonight
A slight chance of showers between midnight and 2am. Partly cloudy, with a low around 25. West northwest wind 8 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 47. North northwest wind 8 to 10 mph.
Sunday Night
Mostly clear, with a low around 28. North wind 6 to 10 mph becoming south southeast after midnight.
Monday
Mostly sunny, with a high near 68. Breezy, with a south wind 13 to 21 mph, with gusts as high as 32 mph.
Monday Night
Mostly clear, with a low around 40. South southwest wind 8 to 14 mph becoming north after midnight. Winds could gust as high as 23 mph.
Tuesday
Sunny, with a high near 70. North northeast wind around 8 mph.
Tuesday Night
Mostly clear, with a low around 48. East wind 8 to 11 mph, with gusts as high as 21 mph.
Wednesday
Mostly sunny, with a high near 82. Breezy, with a south wind 13 to 22 mph, with gusts as high as 32 mph.
Wednesday Night
A chance of showers, mainly after 1am. Partly cloudy, with a low around 56. Breezy. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 75. Breezy. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 37. Breezy. Chance of precipitation is 40%.
Friday
A chance of showers. Partly sunny, with a high near 51. Breezy. Chance of precipitation is 30%.
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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:
6:36 am CDT Apr 18, 2026
Forecast Valid:
6am CDT Apr 18, 2026-6pm CDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation