Some very nice bucks have been shot in the region this week. But as good as things have been, they could get exponentially better in the next five days. While a warm, low-pressure system full of rain and humidity has blanketed the upper Midwest recently, that's going to change dramatically Thursday night, into Friday. By this weekend, hard frost will be the norm at night, and daytime highs will peak in the mid-40s. Anyone who can bowhunt this weekend should spend as much time in the woods as possible.