I was reading somewhere (Cody Lundin's book?) that most cases of hypothermia occur when the air temp is between freezing and 50°F. I guess if the weather was any colder, a person would be dressed more suitably.

One thing I wonder about is if hypothermia occurs to someone in a group survival situation: the light plane is down, one person falls into a creek and gets wet, the temp is just above freezing, and the wind is blowing. The wet person becomes moderately (trouble speaking, not always coherent) hypothermic, the small group finds shelter, builds a fire, and cuddles up with the hypothermic person. If they keep that person warm for 24 hrs in dry clothes, can they bring that person back to a normal core temp without outside help?

Sue