The oppressive heat has affected the entire state of Tennessee, with cities like Memphis experiencing highs in the upper 90s and Nashville and Knoxville seeing temperatures in the mid-80s. The prolonged heat poses risks such as heat-related illnesses, especially for vulnerable populations like the elderly and those with pre-existing health conditions. While a slight break in the heat is expected around September 23, above-average temperatures will persist through the end of the month, delaying the arrival of true fall weather.