A warm 'false spring' is the forecast. So is the polar vortex.

Spring fever, anyone?

Folks across the central, eastern and southern United States are about to experience potentially record warmth over the next week or so as temperatures skyrocket.

"Enjoy the springtime warmth − maybe even 'heat' − with temperatures pushing into the 80s for more than 100 million Americans over the next 7-10 days," said Weather Trader meteorologist Ryan Maue in an email to USA TODAY.

In an online forecast, AccuWeather senior meteorologist Matt Benz said "the pattern from late this week into the weekend will give tens of millions of people in parts of the Midwest and Northeast a serious case of spring fever."

This "false spring" will be short-lived, however, as another unwelcome visit from Old Man Winter − in the form of the dreaded polar vortex − is in the offing for later next week. "We will see (hopefully) winter’s final Arctic blast move through the Lower 48 [in] middle March," Maue said.