Parade revelers will be a bunch of frozen turkeys on Thursday morning as plummeting temperatures may make this Thanksgiving the coldest in the Big Apple in more than a century.

The mercury in Central Park will read in the low to mid-20s for most of the day — but biting wind gusts of up to 30 mph will make it feel like 10 to 15 degrees.

“It’s going to feel [more] like the middle of January than Thanksgiving Day,” Accuweather meteorologist Dave Dombek told The Post on Wednesday.

The bone-chilling forecast is on the cusp of the record set in 1901, when it was 19 frigid degrees in Central Park.

“Essentially it’s probably one of the coldest ever on record and it’s probably very likely the coldest that we’ve had in about 100 years,” Dombek said.

Turkey Day may be crisp and blustery — but it’ll also be sunny and clear for the annual Macy’s Thanksgiving Day Parade in Manhattan.

Dombek said early birds lining up for the parade at 6 or 7 in the morning should expect temperatures to feel like in the “single numbers.”

The parade’s 16 balloons will be grounded if sustained winds exceed 23 mph and gusts surpass 34 mph, parade officials told The Post.

“There’s going to be plenty of wind to add to the chill in the air, to make it feel pretty nasty out there if you’re not well bundled up,” he said.

He advised paradegoers — and even those popping out for a quick bottle of wine or last-minute pie before the big feast — that layers are the best way to go.

“Layers are always better than a T-shirt and huge parka. Close your eyes and don’t look at the calendar,” he said. “Pretend you’re going out there on a January or February day. Dress as if it’s middle of winter and I think you’ll be fine.”

Other chilly Thanksgivings in the books came in 1989, when nearly 5 inches of snow fell in Central Park and temperatures dipped to 25, and 1996, when the low was just 23 with a light dusting.

“I think in the grand scheme of things, people would rather have it dry and 3 or 5 degrees colder and not have to worry about [snow]storms than to have it 4 to 5 degrees higher and 5 inches of snow,” Dombek said.

The freezing temperatures will continue into Black Friday, but shoppers won’t have to battle as much wind.

“It’s going to be less harsh,” said Dombek, who added that it’ll also remain dry for the biggest shopping day of the year. “[But] it’s still going to be way below normal for this time of year.”