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.

Fog/Mist

39°F

4°C

Humidity 96%
Wind Speed NW 8 mph
Barometer 29.76 in (1008.6 mb)
Dewpoint 38°F (3°C)
Visibility 6.00 mi
Wind Chill33°F (1°C)
Last update 14 Apr 5:53 am CDT
Extended Forecast for

Watertown SD

Dense Fog Advisory until April 14, 08:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory until April 14, 08:00am

    NOW until 8:00am Tue

    Dense Fog Advisory

  • Today

    High: 62 °F

    Patchy Dense
    Fog then
    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. North wind around 6 mph becoming calm in the evening.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers after 1pm. Mostly sunny, with a high near 68. Light and variable wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 20%.

    High: 68 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers. Mostly clear, with a low around 45. Southwest wind 6 to 8 mph becoming south southeast in the evening. Chance of precipitation is 20%.

    Low: 45 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Sunny, with a high near 77. South wind 9 to 17 mph, with gusts as high as 28 mph.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers after 1am. Mostly cloudy, with a low around 45. South wind 11 to 15 mph becoming east after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%.

    Low: 45 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 55. Breezy, with an east northeast wind 15 to 23 mph becoming north northwest in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 60%.

    High: 55 °F

    Showers
    Likely and
    Breezy

  • Friday Night

    Friday Night: A chance of rain and snow showers before 10pm, then a chance of snow showers. Mostly cloudy, with a low around 25. Blustery, with a north northwest wind 22 to 26 mph, with gusts as high as 37 mph. Chance of precipitation is 30%.

    Low: 25 °F

    Blustery.
    Chance
    Rain/Snow
    then Chance
    Snow Showers

Detailed Forecast

Today
Patchy dense fog before 10am. Otherwise, mostly cloudy, with a high near 62. Light and variable wind becoming northwest 5 to 10 mph in the morning.
Tonight
Mostly cloudy, with a low around 40. North wind around 6 mph becoming calm in the evening.
Wednesday
A slight chance of showers after 1pm. Mostly sunny, with a high near 68. Light and variable wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers. Mostly clear, with a low around 45. Southwest wind 6 to 8 mph becoming south southeast in the evening. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 77. South wind 9 to 17 mph, with gusts as high as 28 mph.
Thursday Night
A chance of showers after 1am. Mostly cloudy, with a low around 45. South wind 11 to 15 mph becoming east after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%.
Friday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 55. Breezy, with an east northeast wind 15 to 23 mph becoming north northwest in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 60%.
Friday Night
A chance of rain and snow showers before 10pm, then a chance of snow showers. Mostly cloudy, with a low around 25. Blustery, with a north northwest wind 22 to 26 mph, with gusts as high as 37 mph. Chance of precipitation is 30%.
Saturday
A chance of snow showers, mainly before 1pm. Mostly cloudy, with a high near 40. Breezy, with a northwest wind 18 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 23. Blustery.
Sunday
Sunny, with a high near 50.
Sunday Night
Mostly clear, with a low around 31.
Monday
Sunny, with a high near 61.
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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 14, 2026
Forecast Valid:
6am CDT Apr 14, 2026-6pm CDT Apr 20, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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