If you're in the northern half of the United States, you are currently freezing your ass off.
Coming straight from the North Pole, the cold air that is now traveling southward (a phenomenon known as a "polar jet stream") had already hit parts of the Midwest and Northeast (think Michigan, northern Ohio, northwest Pennsylvania and western New York), delivering lots of snow by the end of last week.
Does this chaotic, freezing mess sound familiar? That's because we've been hit by similar temperatures and overall inconvenience during the winter of 2013-2014, when the Polar Vortex forced us all to wear three pairs of socks and two coats before leaving our homes.
If you're in Boston, expect temperatures to feel as low as -25 degrees, courtesy of windchill, with an 80% chance of snow starting Friday. Folks in Cleveland, Chicago, Philadelphia and Washington DC will almost certainly see snow tomorrow as well, accompanied by temperatures in the 20s range.
Moral of the story: It might as well be the Arctic out there so bundle up.
Happy not even official winter, northern United States!