In the Dakotas where I hunt deer, it has been on opening morning from 75 degrees to -15 degrees so you never know what to expect. However the one thing that we seldom if ever have is bugs of any kind. Usually by opening day there have been several hard freezes killing off those pesky critters. Although we can have both temp. extremes, its usually very nice with temps in the 40's to low 50's in then daytime and mid 20's at night. Warm enough to hunt in comfort and cold enough at night to cool the meat down well. My average day of hunting will include driving out along the river breaks and finding a spot to watch the edges of the winter wheat field where the deer come out to feed or go down in to bed down. Its mostly Mule deer and its pretty easy hunting. The deer numbers are very high right now. This year I bought eight Mule deer does tage and filled six of them the first week. I have two left but had to stop to get these processed before I finish up. Just got them all done up this week. I have until Jan. 10th to hunt yet.