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.

Mostly Cloudy

57°F

14°C

Humidity 96%
Wind Speed S 20 mph
Barometer 29.63 in (1003.9 mb)
Dewpoint 56°F (13°C)
Visibility 7.00 mi
Last update 11 Apr 11:53 pm CDT
Extended Forecast for

Watertown SD

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 50. South wind around 18 mph, with gusts as high as 28 mph.

    Low: 50 °F

    Patchy Fog

  • Sunday

    Sunday: Mostly cloudy through mid morning, then gradual clearing, with a high near 79. Breezy, with a south wind 15 to 22 mph becoming west in the afternoon. Winds could gust as high as 33 mph.

    High: 79 °F

    Becoming
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 45. West wind 6 to 14 mph becoming east northeast after midnight. Winds could gust as high as 22 mph.

    Low: 45 °F

    Increasing
    Clouds

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 67. East wind 10 to 14 mph. Chance of precipitation is 50%.

    High: 67 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers before 1am. Partly cloudy, with a low around 40. North northeast wind 7 to 10 mph. Chance of precipitation is 20%.

    Low: 40 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 64. North wind 7 to 10 mph. Chance of precipitation is 50%.

    High: 64 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 42. North wind 5 to 8 mph becoming southeast after midnight. Chance of precipitation is 40%.

    Low: 42 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers before 1pm. Mostly sunny, with a high near 68. South southeast wind 6 to 10 mph. Chance of precipitation is 20%.

    High: 68 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44. Southeast wind 7 to 9 mph.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 50. South wind around 18 mph, with gusts as high as 28 mph.
Sunday
Mostly cloudy through mid morning, then gradual clearing, with a high near 79. Breezy, with a south wind 15 to 22 mph becoming west in the afternoon. Winds could gust as high as 33 mph.
Sunday Night
Increasing clouds, with a low around 45. West wind 6 to 14 mph becoming east northeast after midnight. Winds could gust as high as 22 mph.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 67. East wind 10 to 14 mph. Chance of precipitation is 50%.
Monday Night
A slight chance of showers before 1am. Partly cloudy, with a low around 40. North northeast wind 7 to 10 mph. Chance of precipitation is 20%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 64. North wind 7 to 10 mph. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 42. North wind 5 to 8 mph becoming southeast after midnight. Chance of precipitation is 40%.
Wednesday
A slight chance of showers before 1pm. Mostly sunny, with a high near 68. South southeast wind 6 to 10 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 44. Southeast wind 7 to 9 mph.
Thursday
Sunny, with a high near 70.
Thursday Night
A chance of showers. Partly cloudy, with a low around 37. Chance of precipitation is 40%.
Friday
A chance of rain and snow showers. Mostly cloudy, with a high near 50. Breezy. Chance of precipitation is 40%.
Friday Night
A slight chance of snow showers. Mostly cloudy, with a low around 24. Blustery. Chance of precipitation is 20%.
Saturday
A slight chance of snow showers. Partly sunny, with a high near 44. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Watertown SD
 44.91°N 97.14°W (Elev. 1736 ft)
Last Update:
12:16 am CDT Apr 12, 2026
Forecast Valid:
12am CDT Apr 12, 2026-6pm CDT Apr 18, 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