*As of Jul 30, 4 AM local time.*
Alert and Current Conditions
A Heat Advisory is currently in effect for the McKinney area, signaling dangerous heat levels that require caution. The advisory remains active until late evening on July 30. As of this Thursday overnight, conditions are already warm and muggy.
The air temperature sits at 79F, but the combination of heat and moisture pushes the feels-like temperature to 82F. Humidity is notably high, with relative humidity at 79% and a dew point of 72F. Winds are light from the south at 5 mph, though gusts have reached 13 mph, under clear skies.
Forecast for Today and Tonight
Residents should prepare for intense heat throughout the day. Today will be sunny with a high near 100F. The National Weather Service indicates that heat index values could soar as high as 108F due to the humid air mass.
Winds will shift slightly to south-southwest at 5 to 10 mph. As evening approaches, skies will remain mostly clear. Temperatures will drop to a low around 80F overnight.
However, the heat will linger, with heat index values remaining as high as 107F. Winds will continue from the south at 5 to 10 mph.
Outlook for Tomorrow
The heat will intensify further tomorrow. The forecast calls for sunny skies and a high near 103F. This extreme warmth will drive heat index values up to 111F, making it feel significantly hotter than the actual air temperature.
