Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fog/Mist

73°F

23°C

Humidity 100%
Wind Speed SE 5 mph
Barometer 29.60 in (1001.0 mb)
Dewpoint 73°F (23°C)
Visibility 1.25 mi
Last update 29 Jun 2:53 am CDT
Extended Forecast for

5 Miles WSW Watertown SD

Heat Advisory June 29, 12:00pm until June 29, 08:00pm
Dense Fog Advisory until June 29, 09:00am
Click here for hazard details and duration
Heat Advisory
Dense Fog Advisory
  •  
    Dense Fog Advisory until June 29, 09:00am

    NOW until 9:00am Mon

    Dense Fog Advisory

  • Overnight

    Low: 73 °F

    Patchy Fog

  • Monday

    Monday: Patchy fog before 9am.  Otherwise, mostly cloudy, then gradually becoming sunny and hot, with a high near 95. Heat index values as high as 100. Breezy, with an east southeast wind 11 to 16 mph becoming south 18 to 23 mph in the afternoon. Winds could gust as high as 34 mph.

    High: 95 °F

    Breezy.
    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 31 mph.

    Low: 64 °F

    Clear and
    Breezy then
    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87. West southwest wind 9 to 15 mph, with gusts as high as 25 mph.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 64. West southwest wind 5 to 9 mph becoming east southeast after midnight.  Chance of precipitation is 40%.

    Low: 64 °F

    Mostly Clear
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 1pm, then showers likely between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm.  Partly sunny, with a high near 89. South wind 8 to 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 65. West wind 5 to 8 mph becoming east southeast after midnight.  Chance of precipitation is 40%.

    Low: 65 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms after 1pm.  Mostly sunny and hot, with a high near 92. Light southeast wind becoming south southeast 9 to 14 mph in the morning. Winds could gust as high as 22 mph.  Chance of precipitation is 30%.

    High: 92 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a steady temperature around 73. East wind around 10 mph.
Monday
Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny and hot, with a high near 95. Heat index values as high as 100. Breezy, with an east southeast wind 11 to 16 mph becoming south 18 to 23 mph in the afternoon. Winds could gust as high as 34 mph.
Monday Night
Mostly clear, with a low around 64. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 31 mph.
Tuesday
Sunny, with a high near 87. West southwest wind 9 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64. West southwest wind 5 to 9 mph becoming east southeast after midnight. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms before 1pm, then showers likely between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 89. South wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 65. West wind 5 to 8 mph becoming east southeast after midnight. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 92. Light southeast wind becoming south southeast 9 to 14 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 30%.
Thursday Night
Showers and thunderstorms likely, mainly before 1am. Partly cloudy, with a low around 68. Southeast wind 8 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.
Friday
Mostly sunny, with a high near 89.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 40%.
Independence Day
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 50%.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Watertown SD
 44.88°N 97.26°W (Elev. 1749 ft)
2:36 am CDT Jun 29, 2026
3am CDT Jun 29, 2026-6pm CDT Jul 5, 2026
 
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Additional Resources

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