The best time to look for sheds is when you have time! Thats the beauty of it. I found a bunch while hunting deer this year. In fact, at times i bailed on hunting deer and just went for the sheds and dead heads. Just don't bugger the deer and have a great time! I understand that those critters have a rough go when the snow is deep so I leave them alone. Other than that, I'm out poundin the hills. It's a judgement call...if you think the animals can handle a dude walkin through their territory, do it. If you think they would be stressed out, hold on a bit. Shed hunting is a great way to get the kids involved and enjoy the outdoors year round. Have fun and pick up a bunch! P.S. I think really cold weather hurts them more than snow. It takes an awfull lot of energy to stay warm. Snow doesn't hurt them a bit.