Winter weather could snarl travel plans for the millions of Americans traveling for the Thanksgiving holiday this year.

Mother Nature is about to serve up some unappetizing conditions for the millions of Thanksgiving travelers: sloppy weather, snow, the coldest temperatures since February and a potentially disruptive storm are on the way through the holiday weekend. Here’s a day-by-day look at what to expect this week.

Post-Thanksgiving travel is expected to be impacted by winter weather and frigid temperatures as millions of people across the U.S. pack up and head home after the holiday.

Millions of people across the central and eastern U.S. could see snow or rain through the Thanksgiving holiday weekend, forecasters said.

Parts of the Great Lakes region saw new snow Monday and faced the prospect of even more this week after U.S. travelers battled harsh weather to get home after Thanksgiving, forecasters said.Snow showers fell in western Michigan overnight,

Tuesday and Wednesday should be the busiest days on the road, and disruptive weather could occur both days before Thanksgiving, AccuWeather says.

A storm centered on Thanksgiving will cause significant travel delays for tens of millions as it delivers drenching rain to areas along the East Coast and in the lower Ohio Valley, but snow will fly and accumulate farther to the north and west,

An Arctic blast brought snow, frost and dangerously cold winds to the northern Plains, the Midwest and the Great Lakes, creating “very difficult to impossible” travel conditions on one of the busiest days of the year,

Among the most pressing concerns will be Denver International Airport, where snowfall could delay travelers heading in and out on what should be one of the biggest airline travel days of the year. Roys said the current forecast of 1 to 3 inches of snow Wednesday could be enough to cause flight delays.

An arctic blast of severe cold and snow is creating hazardous conditions across the Great Lakes region over the next two days, according to the US Weather Prediction Center, potentially disrupting the plans of millions traveling the roads and skies.