*As of Aug 7, 4 AM local time.*
Humid start
Quite humid air is the main weather story in McKinney. The dew point is 72F and relative humidity is 74%, making the air feel heavier even under a clear sky. The current air temperature is 81F, with a feels-like reading of 85F. Wind is 8 mph, with gusts to 14 mph.
That humidity will matter as heat builds. Even without much rain in the forecast, the combination of high temperatures and moist air can make outdoor activity feel more taxing.
Today, tonight and tomorrow
Today is expected to be sunny, with a high near 99F and a low near 79F. The chance of precipitation is 3%. Heat index values may reach 102F. South wind is expected at 5 to 10 mph.
Tonight should stay mostly clear, with a low around 78F. Heat index values may be as high as 101F, and south southeast wind is expected at 5 to 10 mph.
Tomorrow is also expected to be sunny, with a high near 99F and a low near 77F. The chance of precipitation is 13%. Heat index values may rise as high as 104F, with south wind at 5 to 10 mph.
