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

42°F

6°C

Humidity 100%
Wind Speed NE 13 mph
Barometer 29.77 in (1008.3 mb)
Dewpoint 42°F (6°C)
Visibility 0.15 mi
Wind Chill35°F (2°C)
Last update 13 Apr 7:53 am CDT
Extended Forecast for

Watertown SD

Dense Fog Advisory April 13, 08:09am until April 13, 11:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory April 13, 08:09am until April 13, 11:00am

    NOW until 11:00am Mon

    Dense Fog Advisory

  • Today

    High: 67 °F

    Chance
    Showers and
    Areas Dense
    Fog

  • Tonight

    Tonight: A chance of showers, mainly before 9pm. Partly cloudy, with a low around 41. Northeast wind 6 to 11 mph becoming north northwest after midnight. Chance of precipitation is 30%.

    Low: 41 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 63. West northwest wind 6 to 10 mph.

    High: 63 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41. North wind 5 to 7 mph becoming east after midnight.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers, mainly after 1pm. Mostly sunny, with a high near 68. East southeast wind 5 to 9 mph. Chance of precipitation is 40%.

    High: 68 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers before 1am. Partly cloudy, with a low around 43. East northeast wind around 8 mph becoming south after midnight. Chance of precipitation is 20%.

    Low: 43 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Sunny, with a high near 75. South wind 8 to 16 mph, with gusts as high as 25 mph.

    High: 75 °F

    Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers after 1am. Partly cloudy, with a low around 45. South southeast wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    Low: 45 °F

    Mostly Clear
    then Slight
    Chance
    Showers

Detailed Forecast

Today
A chance of showers, with thunderstorms also possible after 1pm. Areas of dense fog before 1pm. Otherwise, mostly cloudy, with a high near 67. East wind 14 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.
Tonight
A chance of showers, mainly before 9pm. Partly cloudy, with a low around 41. Northeast wind 6 to 11 mph becoming north northwest after midnight. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 63. West northwest wind 6 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 41. North wind 5 to 7 mph becoming east after midnight.
Wednesday
A chance of showers, mainly after 1pm. Mostly sunny, with a high near 68. East southeast wind 5 to 9 mph. Chance of precipitation is 40%.
Wednesday Night
A slight chance of showers before 1am. Partly cloudy, with a low around 43. East northeast wind around 8 mph becoming south after midnight. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 75. South wind 8 to 16 mph, with gusts as high as 25 mph.
Thursday Night
A slight chance of showers after 1am. Partly cloudy, with a low around 45. South southeast wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Friday
A chance of rain showers before 4pm, then a chance of rain and snow showers. Mostly cloudy, with a high near 54. Breezy, with a south southwest wind 16 to 24 mph becoming northwest in the morning. Winds could gust as high as 34 mph. Chance of precipitation is 40%.
Friday Night
A chance of rain and snow showers before 10pm, then a slight chance of snow showers. Mostly cloudy, with a low around 25. Blustery. Chance of precipitation is 30%.
Saturday
A slight chance of snow showers. Partly sunny, with a high near 44. Breezy. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Sunny, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Watertown SD
 44.91°N 97.14°W (Elev. 1736 ft)
Last Update:
7:51 am CDT Apr 13, 2026
Forecast Valid:
8am CDT Apr 13, 2026-6pm CDT Apr 19, 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