FJR and Al, I feel sorry for you folks in the winter. Having spent 2/3 of my life in IL and 1/3 in ND, I will take ND in the winter any day. At 20 above, the air can hold a lot more humidity than it can at -20. I am still just wearing a light jacket and insulated vest for most of my outside work. If I am going to be out a couple hours I slip on the insulated coveralls. 100% relative humidity at 20 below, means that you are getting snow that requires about 50" to equal an inch of water. Break the wind and it ain't bad at all. Just for your information it is about 10F tonight and a gentle 20 mph breeze, supposed to get colder and windy tomorrow. It may be an interesting 80 mile commute in the morning.