This final weekend of 2013 will be the story of two completely different days from a weather standpoint with mild temperatures Saturday followed by snow and tumbling temps. Sunday.
Early Friday, we had some cold weather as well in places where skies cleared with Engadine in Western Mackinac County falling to -15F. In the Lower Peninsula both Presque Isle and Pellston bottomed out at -7F early Friday morning.
We get a brief reprieve Friday into Saturday from the cold and snow. Somewhat milder weather over the Plains will get swept into the Great Lakes area. Temperatures Friday night will hold steady or actually warm a couple of degrees on southwest winds with a few spots not dropping below 30F or so.
Saturday will be the warmest day we've had in awhile. Mild southwest winds will allow temperatures to climb into the 30's, and a few spots southwest of Traverse City could touch 40F for a brief time with a little bit of melting. While dry Saturday, skies will remain mostly cloudy.
Any warmth is short lived as cold polar air that has been pooling upstream will make a beeline into Northern Michigan late Saturday night through Sunday. The arrival of a cold front pushing that cold air into the area will also touch off snow, starting in our northern counties Saturday night and then into part of Sunday. Highs Sunday will drop, with temperatures falling to around 20F late in the day.
Arctic air will then remain locked in place across Northern Michigan through much of next week. Daytime highs Monday through New Years Day will struggle to get much higher than 10F with overnight lows dipping below zero. Unfortunately, the core of the coldest temperatures will sit over us around New Years Eve. If you are heading out New Years Eve, plan accordingly as it will be a frigid night across Michigan's north.