Before most New Yorkers even woke up Thursday morning, the city set a record for the hottest Christmas Eve in recorded history.

The mercury hit 64 degrees at 12:01 a.m., topping the all-time Dec. 24 high temperature of 63 degrees set in 1996, according to AccuWeather.

It’s expected to reach 74 degrees by 2 p.m. on Thursday.

Meteorologists are expecting another record-breaking day on Christmas on Friday, when the mercury is expected to hit 66 degrees. That’ll shatter the Big Apple Christmas mark of 54 degrees set in 1982.

It’ll cool down to a high of 50 degrees on Saturday and warm up again to 65 degrees on Sunday.

Unseasonably warm weather is blanketing the entire East Coast.

“I just think, `Wow,’ “ said AccuWeather meteorologist Tom Kines, based in oddly toasty State College, Pa. “When I walked outside this morning and it was 60 degrees, it felt like a spring morning.”

Even in the farthest northern reaches of Canada, it’ll be a shockingly warm 50 degrees on Thursday.

In another example of just how remarkably warm it is right now in Gotham, the mercury hit 75 degrees this past Fourth of July – so just a single degree more than Thursday’s high.

It’ll be hotter in New York than in sunny Southern California on Thursday and Friday, where La La Land residents will experience 63- and 60-degree days, respectively.