I guess it depends on the part of the country you are in and the type of wood. Oaks store water in the trunk, lots of it. By cutting a tree in full foliage and just that laying it down nothing more. The leaves will continue to use the water stored in the trunk until it is all gone then the leaves wilt and dry up. Most all of the water is gone. This is evident while splitting, even trees dead for years with intact bark water will be seen being pressed out of the wood. Trees cut with full leaves do not show as much water if any. Like I said maybe different types of trees farther north drain all the water before the big freeze.