*As of Aug 15, 5 PM local time.*
Current Conditions and Alert Status
McKinney residents are currently experiencing dangerous heat conditions under an active Heat Advisory issued by the National Weather Service. The air temperature stands at 100F, but the combination of heat and humidity makes it feel like 108F. Relative humidity is at 37%, with a dew point of 70F, contributing to the muggy sensation.
The sky is mostly clear, and winds are blowing from the south at 10 mph, with gusts reaching 20 mph. This advisory is classified as moderate severity and is expected to remain in effect until tomorrow evening. The primary risk is heat-related illness, particularly for those spending extended time outdoors.
Today and Tonight Outlook
Today’s high temperature is near 101F, with a low of 80F. The chance of precipitation is minimal at just 1%, and sunny conditions are expected to persist. Heat index values may reach as high as 106F during the day.
Tonight, the sky will remain clear, and temperatures will drop to around 80F before rising slightly to 83F overnight. Heat indices could still reach 103F, indicating that the air remains uncomfortably warm even after sunset. Winds will continue from the south at around 10 mph, with gusts up to 20 mph.
Residents should be aware that the lack of significant cooling overnight means the heat will linger into the early morning hours.
