From what I understand the wet doesn't bother them that much. They are insulated pretty well. I dont' think they care for heavy rain however because it hampers there two most sensitive senses, hearing and smell. Deer are pretty skitish in the first place, add that on top of it and I dont' think they are going move more than they need to. However I think once the rut starts all bets are off, they just don't think straight then.

Paul