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.

Fair

93°F

34°C

Humidity 49%
Wind Speed SW 6 mph
Barometer 29.80 in (1007.4 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 26 Jul 2:53 pm CDT
Extended Forecast for

7 Miles NNW Wallace SD

Extreme Heat Warning July 26, 03:29pm until July 26, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 26, 03:29pm until July 26, 09:00pm

    NOW until 9:00pm Sun

    Extreme Heat Warning

  • This Afternoon

    High: 94 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 72. West wind 5 to 9 mph becoming north northeast in the evening.

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny and hot, with a high near 90. North wind 9 to 11 mph.

    High: 90 °F

    Hot

  • Monday Night

    Monday Night: Increasing clouds, with a low around 70. North wind around 6 mph becoming east after midnight.

    Low: 70 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 90. South southeast wind 5 to 8 mph.

    High: 90 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69. Southeast wind 7 to 9 mph.

    Low: 69 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 90. South wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 90 °F

    Hot

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70. South southeast wind around 10 mph. Chance of precipitation is 30%.

    Low: 70 °F

    Mostly Clear
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 94. Heat index values as high as 105. Calm wind.
Tonight
Mostly clear, with a low around 72. West wind 5 to 9 mph becoming north northeast in the evening.
Monday
Mostly sunny and hot, with a high near 90. North wind 9 to 11 mph.
Monday Night
Increasing clouds, with a low around 70. North wind around 6 mph becoming east after midnight.
Tuesday
Mostly sunny and hot, with a high near 90. South southeast wind 5 to 8 mph.
Tuesday Night
Mostly clear, with a low around 69. Southeast wind 7 to 9 mph.
Wednesday
Sunny and hot, with a high near 90. South wind 8 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70. South southeast wind around 10 mph. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Thursday Night
A chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 66. Chance of precipitation is 50%.
Friday
Mostly sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles NNW Wallace SD
 45.18°N 97.54°W (Elev. 1847 ft)
Last Update:
2:37 pm CDT Jul 26, 2026
Forecast Valid:
3pm CDT Jul 26, 2026-6pm CDT Aug 1, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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