National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair and Breezy

44°F

7°C

Humidity 22%
Wind Speed W 21 G 35 mph
Barometer 30.02 in (1018.1 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 18 Apr 4:53 pm CDT
Extended Forecast for

Watertown SD

  • Tonight

    Tonight: A chance of sprinkles and flurries before 11pm, then a slight chance of snow showers between 11pm and 3am, then scattered flurries after 3am. Partly cloudy, with a low around 26. Blustery, with a west wind 16 to 21 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 20%.

    Low: 26 °F

    Isolated
    Sprinkles/Snow
    and Blustery

  • Sunday

    Sunday: Sunny, with a high near 46. North wind around 9 mph.

    High: 46 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 27. North wind 6 to 10 mph becoming south southeast after midnight.

    Low: 27 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 69. Breezy, with a south wind 13 to 22 mph, with gusts as high as 33 mph.

    High: 69 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 39. South southwest wind 7 to 13 mph becoming north after midnight. Winds could gust as high as 21 mph.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73. North northeast wind around 8 mph.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50. East wind 9 to 14 mph, with gusts as high as 24 mph.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84. Breezy, with a south wind 15 to 20 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 37 mph.

    High: 84 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 56. Breezy, with a south wind 23 to 26 mph, with gusts as high as 38 mph. Chance of precipitation is 50%.

    Low: 56 °F

    Breezy.
    Slight Chance
    Showers then
    Chance
    Showers

Detailed Forecast

Tonight
A chance of sprinkles and flurries before 11pm, then a slight chance of snow showers between 11pm and 3am, then scattered flurries after 3am. Partly cloudy, with a low around 26. Blustery, with a west wind 16 to 21 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 46. North wind around 9 mph.
Sunday Night
Mostly clear, with a low around 27. North wind 6 to 10 mph becoming south southeast after midnight.
Monday
Mostly sunny, with a high near 69. Breezy, with a south wind 13 to 22 mph, with gusts as high as 33 mph.
Monday Night
Mostly clear, with a low around 39. South southwest wind 7 to 13 mph becoming north after midnight. Winds could gust as high as 21 mph.
Tuesday
Sunny, with a high near 73. North northeast wind around 8 mph.
Tuesday Night
Mostly clear, with a low around 50. East wind 9 to 14 mph, with gusts as high as 24 mph.
Wednesday
Mostly sunny, with a high near 84. Breezy, with a south wind 15 to 20 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 37 mph.
Wednesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 56. Breezy, with a south wind 23 to 26 mph, with gusts as high as 38 mph. Chance of precipitation is 50%.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 73. Breezy. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 33. Breezy. Chance of precipitation is 40%.
Friday
A chance of rain and snow showers. Partly sunny, with a high near 50. Breezy. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 28. Blustery.
Saturday
Mostly sunny, with a high near 50.
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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:
4:36 pm CDT Apr 18, 2026
Forecast Valid:
5pm CDT Apr 18, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation