New York City schools will be back in-person Tuesday after Monday’s first actual snow day in years — prompting and an avalanche of protests.

Up to 2 feet of snow blanketed the boroughs as Winter Storm Hernando blew through the city, but the fluffy white stuff won’t be enough for students to have a second day off, Mayor Zohran Mamdani said Monday.

“I do have some tough news to share: School will be in-person tomorrow,” he said during a weather update presser in Brooklyn.

“You can pelt me with snowballs when you see me,” he jokingly told kids.

Mamdani on Sunday announced Monday’s snow day in a cutesy video involving himself and an eighth-grader — as forecasters warned of a potentially historic winter storm looming, ready to engulf the city in blizzard conditions.

It was the first real snow day for the kids — meaning they were completely off, with no remote learning — since 2019.

The schools’ closure dovetailed with a travel ban that warned New Yorkers off the roads.

The overnight-into-Monday storm has since dumped more than 19 inches of snow on Central Park, while parts of Staten Island more than 2 feet.

Despite still active snow removal, the city’s subways and buses meanwhile got back up in running by midday Monday, MTA officials said.

The progress in digging out the city – and its public schools – from snow and ice was good enough to give students the all-clear to return to class, said schools Chancellor Kamar Samuels.

“I’m pleased to announce that based on clear guidance and clear assessment of conditions, all schools will be fully open and operational tomorrow,” he said.

“The safety and well-being of our students and staff is top is our top priority, and we will continue to monitor conditions closely.”

But not everyone was happy about the move.

Tens of thousands of people signed a petition within minutes Monday to plead with Mamdani to at least opt for remote school instruction Tuesday.

“These conditions create serious safety concerns for students, school staff, and families navigating hazardous roads and limited transit options,” reads the opposing Change.org petition, which had already garnered nearly 70,000 backers by Monday afternoon.

A remote day would “proactively protect our children and educators while easing the significant strain placed on our transportation infrastructure during severe winter weather,” it added.

Even the eighth-grader who appeared in the mayor’s snow-day announcement on social media Sunday said she hopes she’ll get another call soon from Hizzoner — this time saying he’s reversing course on ordering kids back to class Tuesday.

“A lot of people are telling me, texting me on Instagram, ‘Like, can you call the mayor back?” 14-year-old Victoria Mompoint told Gothamist.

 ”The conditions are unsafe, she said. “It’s not even like kids don’t want to go to school — kids don’t want to wait for a bus that’s going to take probably 30 minutes plus and climb over mountains of snow, and it’s probably not possible that all the snow is going to be cleaned off by the time that kids have to go to school tomorrow morning.”

Staten Island Borough President Vito Fossella — whose borough got the most snow dumped on it Monday, a whopping 24.2 inches so far — fumed, “Schools should absolutely remain closed tomorrow.

“Simply put, the City dropped the ball getting ready for this storm,” Fossella, a Republican, raged against the Democratic Mamdani administration.

“And now, Staten Island is completely inundated. Numerous roads are impassable, and people have to walk in the middle of the street because the sidewalks are completely blocked by at least two feet of snow,” the beep said in a statement.

The New York City Council Republican contingent also sounded the alarm over rushing back to school in wake of a historic blizzard — saying the snowy streets will lead to “mass absenteeism.”

-Additional reporting by Carl Campanile and Nicole Rosenthal