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.

Thunderstorm Rain

73°F

23°C

Humidity 84%
Wind Speed NW 7 mph
Barometer 29.96 in (1013.3 mb)
Dewpoint 68°F (20°C)
Visibility 7.00 mi
Last update 25 Jul 10:53 pm CDT
Extended Forecast for

South Shore SD

Extreme Heat Warning until July 26, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning until July 26, 09:00pm

    NOW until 9:00pm Sun

    Extreme Heat Warning

  • Tonight

    Low: 71 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 93. Heat index values as high as 101. Southwest wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 93 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. South wind 5 to 9 mph becoming northwest after midnight.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 91. North wind 9 to 13 mph, with gusts as high as 23 mph.

    High: 91 °F

    Hot

  • Monday Night

    Monday Night: Partly cloudy, with a low around 70. North wind 5 to 8 mph becoming light and variable after midnight.

    Low: 70 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 89. Light and variable wind becoming southeast 5 to 7 mph in the morning.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 68. Northeast wind around 7 mph becoming south southwest after midnight.

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 90. South wind 8 to 11 mph, with gusts as high as 21 mph.

    High: 90 °F

    Hot

Detailed Forecast

Tonight
A chance of showers and thunderstorms, mainly between 3am and 4am. Mostly cloudy, with a low around 71. Southwest wind around 10 mph, with gusts as high as 32 mph. Chance of precipitation is 40%.
Sunday
Mostly sunny and hot, with a high near 93. Heat index values as high as 101. Southwest wind 9 to 11 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 73. South wind 5 to 9 mph becoming northwest after midnight.
Monday
Sunny and hot, with a high near 91. North wind 9 to 13 mph, with gusts as high as 23 mph.
Monday Night
Partly cloudy, with a low around 70. North wind 5 to 8 mph becoming light and variable after midnight.
Tuesday
Sunny, with a high near 89. Light and variable wind becoming southeast 5 to 7 mph in the morning.
Tuesday Night
Mostly clear, with a low around 68. Northeast wind around 7 mph becoming south southwest after midnight.
Wednesday
Sunny and hot, with a high near 90. South wind 8 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71. South wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 50%.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 66.
Saturday
Sunny, with a high near 86.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Shore SD
 45.1°N 96.94°W (Elev. 1909 ft)
Last Update:
11:36 pm CDT Jul 25, 2026
Forecast Valid:
11pm CDT Jul 25, 2026-6pm CDT Aug 1, 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