*As of Aug 5, 12 PM local time.*
Dangerous heat is the main concern
Dangerous heat is the notable weather issue in McKinney right now: the air temperature is 95F, but it feels like 100F. It is currently Wednesday this afternoon, with clear sky over the city.
The air remains dry enough to keep relative humidity at 42%, while the dew point is 68F. Wind is running at 11 mph, with gusts to 12 mph. Even with that breeze, the heat is high enough to make outdoor exertion more stressful than the temperature alone may suggest.
Forecast through tomorrow
Today stays sunny, with a high near 100F and a precipitation chance of 1%. The forecast also notes heat index values as high as 104, with south wind around 10 mph.
Tonight is expected to be mostly clear, with a low near 79F. Heat index values may remain as high as 102, and south southeast wind is forecast at 5 to 10 mph.
Tomorrow brings more sunny weather, with a high near 99F and a low near 79F. The chance of precipitation remains 1%. Heat index values may reach as high as 102, with south southwest wind at 5 to 10 mph.






