December football often means playing in the elements, and while we got a bit of a taste of that in Week 14 -- Josh Allen dashing through the snow in the Bills ' thrilling win over the Bengals comes to mind -- we're going to feel mother nature's full impact in Week 15.

A polar vortex from Canada will descend into the United States this weekend, creating frigid conditions in the midwest and, later, the east coast. Temperatures are expected to hover in the single digits in many areas, and that's without factoring in wind chill and other potential adverse conditions.

"This is the mother lode of cold air and is a term I don't use lightly," AccuWeather meteorologist Bernie Rayno said . NFL Week 15 viewer's guide: Top 10 things to watch, including Super Bowl contenders and Philip

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