*As of Aug 6, 4 AM local time.*
Very hot start
McKinney is in a very warm, clear pattern right now, and the main weather story is heat. The air temperature is 78F, with a feels-like temperature of 79F. Relative humidity is 71%, and the dew point is 68F. Wind is 5 mph, with gusts to 20 mph, under a clear sky.
That warm feel will not take long to build into a much hotter day. Today is forecast to be sunny, with a high near 100F. Heat index values may reach as high as 103. The chance of precipitation today is 1%, so the forecast stays overwhelmingly dry.
Today, tonight and tomorrow
Today’s wind is expected from the south at 5 to 10 mph. Tonight remains clear, with a low around 79F and temperatures rising to around 81 overnight. Heat index values tonight may reach as high as 104, with south wind at 5 to 10 mph.
Tomorrow brings another high near 100F. The forecast starts sunny, then includes a slight chance of showers and thunderstorms. The chance of precipitation tomorrow is 17%. Heat index values may reach as high as 105, with south wind at 5 to 10 mph. Tomorrow night has a low around 78F, with temperatures rising to around 80 overnight.
