The Florida cities of Jacksonville and Miami are expected to rise above 80 degrees, as is Brownsville in the southern tip of Texas.
Oravec added that many areas will not only break records for daily highs — even the daily low temperatures will surpass records.
Weather this warm at this time of year is not totally unprecedented, Oravec said. Norfolk, Virginia's record temperature of 75 degrees was set back in 1891.
And not every region will feel the heat. Cities further north in the Midwest and far northern New England, including Chicago, Des Moines, Iowa, and Burlington, Vermont, will all be much cooler, with temperatures in the lower to mid-40s.
And despite the warmth, severe weather and tornado warnings have been issued in many southern states.
Here is a graphic showing a recent forecast for temperatures around the country.