Eleven people were displaced from their homes Saturday afternoon after a residential fire in Jersey City spread between two adjacent homes and temperatures dropped to frigid levels. Kim Wallace, spokesperson for the Jersey City Police Department, said a fire at a residence on Nunda Avenue at about 11:30 a.m. Saturday spread to an adjacent residence. The fire was under control by about 1 p.m. Saturday afternoon. No residents of either home were injured, but one firefighter suffered burns to his hands and face, officials said, describing the injuries as non-life-threatening. Two adults and three…