Look at these departures! Incredible, simply incredible! You'll never see anything like this during the summer, though. Why? Because it's almost impossible for the atmosphere to generate temperatures 20 degrees above normal in July when it's already hot. It's much easier to accomplish that feat in April and May when the normals are still relatively low.

One question on everyone's mind is, has it been this hot in April. I am here to tell you that I was witness to the hot blast that occurred on the Easter Weekend in 1976. That barn burner produced 90-degree-plus temperatures everywhere from the Midwest to New England. In New York City, it reached 96 during that heat wave, and Boston recorded 94.

From southern Ohio to southern New England, the heat will be on for another day, then temperatures will be significantly lower on Wednesday.

Story by AccuWeather.com Expert Senior Meteorologist John Kocet.