Great question. I have the same issue. Lots of pictures that should turn out great, are blurry because of water on the camera lens. I've been thinking about making something to attach to the tree directly over the camera to keep most of the water off. I was going to use a small piece of plywood. But I got another idea from somewhere on the internet, can't recall where I found this, but I saved a couple of pictures of what someone else is using as a cover for their trail cams: