The official start of winter is still one month away, but temperatures across the nation are dropping this week with some areas dropping below zero.
A blast of arctic air is sweeping across the northeastern region of the nation, causing the first wide-spread accumulation of snow in some states.
From the Dakotas and southern Minnesota to western Pennsylvania, residents woke up to roads covered with ice and snow.
Those living along the Great Lakes saw about six inches coat the ground near New Buffalo, Mich.
The early wave of freezing temperatures is a reminder it's time to prepare for the winter weather.
Allen Welp, with Allen's Snow Removal and Lawn Care in Indiana, said they're making sure they're prepared for the winter rush.
"Just a little bit of snow like this gets people thinking, and we sold quite a bit of salt here this morning and a bunch of snow shovels," he said.
Even in places with no snow warnings, people are taking precautions. In Lexington, Ky., road crews are already pre-treating bridges and overpasses.
"We do this this time of year every year just to get our people back into the routine of knowing what their salt equipment is capable of doing and how to use it," Albert Miller, director of Streets and Roads in Kentucky, said.
Although the coldest temperatures are expected from Washington D.C. to New York City and Boston, people as far south as North Carolina, where there are frost warnings, are stocking up on supplies.
For the northeastern states, the lowest temperatures will be felt Tuesday night through Wednesday, hitting below-freezing in some areas.
The chilly weather won't stick around for long as temperatures are expected to get warmer as the weekend approaches.