Record-setting ‘extreme heatwave’ to hit NYC next week

The Big Apple’s mayoral primary race is heating up — literally. 

The mercury will soar to a sweltering high of 100 degrees — potentially beating a nearly 140-year-old record — as voters head to the polls next week during an “extreme heatwave,” forecasters warned Wednesday.

“This will be our first heatwave of the year,” said Fox News Meteorologist Stephanie Van Oppen. “It’s going to feel like a very big change.”

The dramatic spike in temperature — which comes after a cool and rainy, “Seattle”-like June so far — will begin Thursday with muggy highs in the upper 80s, Van Oppen said.

The heat is expected to stay in that range until Sunday, which will kickoff an oppressive three-day heatwave with a forecast high of 92 degrees. 

Monday is expected to hit a high of 97 degrees, and temperatures will rise to a scorching 100 degrees Tuesday — potentially beating New York City’s hottest-ever June 24 record of 97 degrees, set in Central Park in 1888 — as voting begins in New York’s high-stakes mayoral primary race.

“That’s going to be a big day,” Van Oppen said.

“This is going to be a pretty extreme change and my biggest concern is that people aren’t used to the heat. It could put people at an extra risk,” she said. “Enjoy the sun but take breaks.”

Rain and lower temperatures will return again on Wednesday, she said.

Overall, the shift from cool to hot will be “more intense” this June than usual, she said — but not necessarily a sign that New York is going to roast all summer long. 

The chance, however, of being hit by a hotter-than-average summer is higher than normal, Van Oppen said, citing a seasonal projection.

“If you have been waiting for summer, this might be the weather pattern that brings that change,” she said.