*As of Jul 20, 12 PM local time.*
Dangerous Heat Conditions Underway
A Heat Advisory is currently in effect for McKinney, Texas, signaling dangerous heat conditions for the region. The National Weather Service has issued this moderate-severity alert due to dangerously high heat index values expected through the period. Right now, the air temperature stands at 93F, but the combination of heat and humidity makes it feel like 101F.
The relative humidity is at 50%, with a dew point of 72F, indicating quite humid conditions that will make the heat feel more oppressive. Winds are currently blowing from the south southwest at around 5 mph, though gusts have been noted up to 5 mph. The sky remains clear, offering no relief from the sun.
Forecast for Today and Tomorrow
Today, McKinney will see sunny skies with a high near 100F. The heat index is expected to reach as high as 107F during the afternoon hours. Overnight, conditions will clear up, with a low around 80F. However, temperatures will rise to around 82F overnight, keeping the heat index as high as 106F. Winds will shift to the south at 5 to 10 mph.
Tomorrow, the heat will intensify further. Sunny skies will persist with a high near 103F. The heat index is forecast to climb to 109F, making it feel significantly hotter than the actual air temperature.
Winds will be light, from the southwest at 0 to 5 mph. Tomorrow night will be clear with a low around 82F, and temperatures rising to around 84F overnight, with heat index values as high as 108F. Winds will remain light from the south southeast at 0 to 5 mph.
