Snowfall moved in quickly across the Northeast Friday into early Saturday. For some areas, it was the first measurable snowfall in the month of December in quite some time!

Behind the snow, arctic air will filled in from Canada, dropping low temperatures down to the single digits. With gusty winds, this will bring wind chills down below zero for many areas. Look at some of the lows early Sunday morning, many locations are barely on the right side of zero!

Wind chills will be dangerously low for a few regions, highlighted with cold weather advisories (above). With wind chills this low, effects of frostbite could take as little as 20-30 minutes to develop, so be sure to bundle up and cover your skin!

Wind chills will remain quite cold into Monday morning, down to near zero or below zero for some. Temperatures will warm up to the 30s into early next week after highs in the teens and 20s this weekend.