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Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

83°F

28°C

Humidity 70%
Wind Speed Calm
Barometer 29.90 in (1011.1 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 25 Jul 11:53 am CDT
Extended Forecast for

Hayti SD

Heat Advisory July 25, 01:00pm until July 26, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: Mostly sunny and hot, with a high near 97. Heat index values as high as 102. North northwest wind 5 to 9 mph becoming south southeast.

    High: 97 °F

    Hot

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then a slight chance of showers and thunderstorms after 3am. Increasing clouds, with a low around 74. South southwest wind around 9 mph. Chance of precipitation is 50%.

    Low: 74 °F

    Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers and thunderstorms before 7am. Mostly cloudy, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 106. South wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 10%.

    High: 99 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 72. South wind 5 to 8 mph becoming north northwest after midnight.

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 95. North wind 7 to 11 mph, with gusts as high as 20 mph.

    High: 95 °F

    Hot

  • Monday Night

    Monday Night: Partly cloudy, with a low around 71. North northeast wind 5 to 7 mph becoming east southeast after midnight.

    Low: 71 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 93. East northeast wind 5 to 7 mph becoming southwest in the afternoon.

    High: 93 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69. East wind 5 to 7 mph becoming south southeast after midnight.

    Low: 69 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 93. South wind 7 to 11 mph, with gusts as high as 20 mph.

    High: 93 °F

    Hot

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 97. Heat index values as high as 102. North northwest wind 5 to 9 mph becoming south southeast.
Tonight
A chance of showers and thunderstorms before 2am, then a slight chance of showers and thunderstorms after 3am. Increasing clouds, with a low around 74. South southwest wind around 9 mph. Chance of precipitation is 50%.
Sunday
A slight chance of showers and thunderstorms before 7am. Mostly cloudy, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 106. South wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 10%.
Sunday Night
Mostly clear, with a low around 72. South wind 5 to 8 mph becoming north northwest after midnight.
Monday
Sunny and hot, with a high near 95. North wind 7 to 11 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 71. North northeast wind 5 to 7 mph becoming east southeast after midnight.
Tuesday
Mostly sunny and hot, with a high near 93. East northeast wind 5 to 7 mph becoming southwest in the afternoon.
Tuesday Night
Mostly clear, with a low around 69. East wind 5 to 7 mph becoming south southeast after midnight.
Wednesday
Mostly sunny and hot, with a high near 93. South wind 7 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 92. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 68. Chance of precipitation is 30%.
Friday
Sunny and hot, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hayti SD
 44.65°N 97.2°W (Elev. 1699 ft)
Last Update:
12:06 pm CDT Jul 25, 2026
Forecast Valid:
12pm CDT Jul 25, 2026-6pm CDT Jul 31, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation