McKinney Heat Advisory in Effect as Feels-Like Temps Hit 105F - Jul 29, 1 PM

*As of Jul 29, 1 PM local time.*

Dangerous Heat Conditions Underway

McKinney, TX, is currently under an active Heat Advisory issued by the National Weather Service. The advisory carries a moderate severity rating and is expected to last until July 30 at 8:00PM CDT. This alert underscores the immediate risks associated with the current weather pattern, where dangerous heat and humidity are combining to create hazardous conditions for residents.

Right now, the air temperature stands at 93F. However, due to significant moisture in the atmosphere, the heat index is pushing values to 105F. The relative humidity is at 56%, with a dew point of 75F, creating an oppressively humid environment that makes the heat feel much more intense than the actual air temperature suggests.

Winds are currently blowing from the south at 9 mph, with gusts reaching up to 10 mph, while the sky remains clear.

Forecast for Today and Tomorrow

Today, McKinney will see mostly sunny skies with a high near 99F. The National Weather Service indicates that heat index values could climb as high as 106 during the day. There is only a 1% chance of precipitation.

Tonight, conditions will shift to partly cloudy skies. Temperatures will drop to a low near 79F, though they may rise slightly to around 81F overnight. The heat index will remain elevated, reaching up to 102F, with south winds continuing at 5 to 10 mph.

Tomorrow, the heat will persist under sunny skies. The high is forecast to reach near 100F, with heat index values again peaking around 106F. Precipitation chances remain very low at 3%.

Winds will shift slightly to south southwest, maintaining speeds of 5 to 10 mph. Tomorrow night, the sky will become mostly clear, with a low around 80F and temperatures rising to approximately 82F overnight. The heat index is expected to stay high at 105F.

Safety Reminder

Given the active Heat Advisory and the oppressive humidity levels, it is critical to prioritize safety. Stay hydrated by drinking plenty of water throughout the day. Limit outdoor exertion, especially during the midday hours when temperatures are highest. Check on elderly neighbors or those who may be vulnerable to heat-related illnesses. If you must be outside, seek air-conditioned spaces frequently and wear lightweight, light-colored clothing.

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Sources

National Weather Service radar

National Weather Service forecast data

Open-Meteo weather data