I think that perhaps maybe for the bucks it might start the chasing and fighting a little sooner. And for the young bucks definatley , it seems that the first real cold spell with frost in october always gets the young guns going. Atleast that is how it is here in PA , it all depends though on your state and how the deer act. But i think the cold weather may get the bucks goin a week or so early , but no matter what , the does are on a cycle , so they wont be affected