I just did my first cold weather run and six inches of snow on the ground. It wasn't near as challenging as I thought it might be. The temperature was in the lower 20's but no wind so I quickly acclimated and stayed warm. The roads were marginaly cleared so I had fairly safe area to run. I slipped a little one time afraid I may have pulled my hamstring a little bit. I think I need to get running shoes without any mesh. Mesh and water and snow don't go together too well.