"It's particularly cold today and this week," said a tourist.
"The winter before, that's no like that. But this time, there's a special time, because really, really hard for us. It's really, really cold," said another tourist.
A few days of extremely cold weather is not enough to freeze the rapids flowing over Niagra Falls. However, if the arctic blast continues, Niagra Falls could freeze in January 2018.