How is this possible?

Weather, that is.  We are literally experiencing a heat wave for December in central Illinois.  It's been unseasonably warm since Thanksgiving but the last 2 days it's been downright balmy.  Yesterday Jay, his friend, Aaron and Nick played outside all day and by 2 p.m. Jay was in a T-shirts and shorts.  After school today the boys and I took a ride on the four wheeler with our spring/fall jackets and then we played dodge ball and kick ball in the yard.  I'm in the Christmas spirit but it feels weird to sing......"Oh the weather outside is frightful," knowing the weather is almost tropical (for where we live anyway) right now!