Catalina Gonnella

Officials say the cold has already contributed to at least 18 deaths this winter.

Wind chills remain dangerously cold, with frostbite possible in just 15 minutes.

The city has kept warming centers open and says more than 460 people stayed in them Saturday night.

Meanwhile, crews are still clearing the docks for the city's bike share program that have been frozen since the January 25th storm.

More than 600 stations have been dug out, and officials say most of the 2,200 should be accessible by Monday night.

Still, riders might see fewer available bikes as the maintenance teams play catch-up.

Temperatures are expected to rise into the 30s by Monday afternoon and could reach the 40s later this week.

For NPR News, I'm Catalina Gonela in New York.