It’s been 11 days since there was a murder in the city — the longest stretch without a ­homicide since police started tracking such data in 1994.

The record eclipsed last year’s 10-day stretch, which lasted from Feb. 13 to Feb. 22.

“Weather is definitely a factor,” a police source said, noting February’s frigid temperatures.

This weekend’s cold snap — which forecasters say could become the bone-chillingest four-day period this winter — may keep people ­inside and out of trouble.

The most recent murder on record was a Harlem shooting the night of the Super Bowl. Two gunmen opened fire on five people at a deli on Feb. 1, killing a 28-year-old father and injuring four others.

Councilman Mark Levine tweeted that the shooting appeared to be “gang-related.”

The homicide hiatus dovetails with the city’s plunging murders, which were down to 328 in 2014 — the lowest since the NYPD started keeping accurate records in 1963.

“Everyone is behaving,” Sgt. Daniel Doody told Reuters.