RE: Sight's off....How can this be?
ur peep moving could be the problem. make sure that ur peep is tied in tight. if you can't tie it in, put a little glue on the serving to keep it in place. I don't think the weather would effect it much. i have hunted from 80 degrees to -10 degrees no problems...but i could be wrong. lastly, it could be your clothing. you could be changing ur form to accomodate for the added bulk. next time you shoot take all of this into consideration.