As if heavy snow and rain from potent storm systems sweeping across the U.S. wasn’t enough to cause travel delays and dampen the holiday spirit, the coldest air of the season will start to infiltrate the country starting on Thanksgiving and could last into at least the start of December.

Meanwhile, a record number of nearly 72 million Americans are expected to travel at least 50 miles (80km) by car over the week, according to insurance company AAA. The anticipated increase is due to petrol prices that are lower than they were during the Thanksgiving holiday last year.