National Weather Service United States Department of Commerce

Less humid conditions are expected over the next couple of days as a cold front sags south of the area. A low pressure system will pass through the Quad State area this weekend, bringing scattered showers and thunderstorms. The best chance for severe weather currently looks to be south of the area.
Yes, it is ridiculously gross outside today. However, today is only the 16th day reaching 90 in Paducah this year, which is well below the normal number of 90 degrees through the end of July. Interesting enough today is the 11th day hitting a heat index of at least 105 degrees, which is way above normal. So it's been a cooler than normal summer, but when it has been hot it has been extreme!!