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

40°F

4°C

Humidity 100%
Wind Speed S 6 mph
Barometer 29.74 in (1007.7 mb)
Dewpoint 40°F (4°C)
Visibility 5.00 mi
Wind Chill36°F (2°C)
Last update 15 Apr 7:53 am CDT
Extended Forecast for

Watertown SD

Fire Weather Watch April 16, 11:00am until April 16, 08:00pm
Dense Fog Advisory until April 15, 09:00am
Click here for hazard details and duration
Fire Weather Watch
...
  •  
    Dense Fog Advisory until April 15, 09:00am

    NOW until 9:00am Wed

    Dense Fog Advisory

  • Today

    High: 73 °F

    Patchy Dense
    Fog then
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 45. South southeast wind 6 to 10 mph.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 81. South southeast wind 10 to 18 mph, with gusts as high as 29 mph.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 35. South southwest wind 10 to 16 mph becoming northeast after midnight. Winds could gust as high as 26 mph.

    Low: 35 °F

    Increasing
    Clouds

  • Friday

    Friday: A chance of rain and snow showers before 4pm, then a slight chance of snow showers. Mostly cloudy, with a high near 47. Breezy, with a north northwest wind 16 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 40%.

    High: 47 °F

    Chance
    Rain/Snow and
    Breezy

  • Friday Night

    Friday Night: A slight chance of snow showers after 1am. Mostly cloudy, with a low around 24. Blustery, with a north northwest wind 17 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.

    Low: 24 °F

    Mostly Cloudy
    and Blustery
    then Slight
    Chance Snow
    Showers

  • Saturday

    Saturday: A slight chance of snow showers before 1pm. Partly sunny, with a high near 42. Breezy, with a northwest wind 17 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.

    High: 42 °F

    Slight Chance
    Snow Showers
    and Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 24. Blustery, with a northwest wind 18 to 23 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 33 mph.

    Low: 24 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

Detailed Forecast

Today
A chance of sprinkles before 9am. Patchy dense fog before 10am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 73. Southeast wind 5 to 9 mph becoming southwest in the afternoon.
Tonight
Mostly clear, with a low around 45. South southeast wind 6 to 10 mph.
Thursday
Sunny, with a high near 81. South southeast wind 10 to 18 mph, with gusts as high as 29 mph.
Thursday Night
Increasing clouds, with a low around 35. South southwest wind 10 to 16 mph becoming northeast after midnight. Winds could gust as high as 26 mph.
Friday
A chance of rain and snow showers before 4pm, then a slight chance of snow showers. Mostly cloudy, with a high near 47. Breezy, with a north northwest wind 16 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 40%.
Friday Night
A slight chance of snow showers after 1am. Mostly cloudy, with a low around 24. Blustery, with a north northwest wind 17 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.
Saturday
A slight chance of snow showers before 1pm. Partly sunny, with a high near 42. Breezy, with a northwest wind 17 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 24. Blustery, with a northwest wind 18 to 23 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 33 mph.
Sunday
Sunny, with a high near 54. Northwest wind 7 to 9 mph.
Sunday Night
Mostly clear, with a low around 33.
Monday
Sunny, with a high near 68.
Monday Night
Mostly clear, with a low around 43.
Tuesday
Sunny, with a high near 70.
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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:
7:36 am CDT Apr 15, 2026
Forecast Valid:
7am CDT Apr 15, 2026-6pm CDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

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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