From time to time I have to remind myself to keep hunting fun. Bow season is very long in my neck of the woods. I don't hunt in the rain. I say it's because I don't want to lose a blood-trail, and I don't. However, both kills last year dropped in sight-- I didn't need a blood trail. But, things can go bad, the deer runs out of sight and makes a couple sharp, unexpected turns. I need the blood trail. My main reason for staying out of the rain is the fun-thing.
I believe (maybe because I expect this) deer are less likely to move when the wind is abnormally heavy, masking sound and movement deer need to spot trouble. If the wind is greater than 15 MPH, rain or threat of same, I punt. Of course 15 mph is dead calm for mid-Kansas!