This is my fear as well. An early hard winter is coming. Hattie does not usually molt until late October. She is in full molt right now!
I'm wondering about this winter too. Hubby would love a "hard" winter with lots of snow. Me, not so much. I'll be ordering some new filter material to put over the openings in the coop to cut the drafts down. I also lower the roosts a few inches to keep the airflow above the chickens' heads.My family's bees are making tons of honey and whatnot. Means the winter is probably going to be a hard one.
I put clear shower curtains up on the windward sides of the run. If anyone is wondering, yes, they have held up really well. This will be the 4th winter for some of the pieces. The trick is to secure it so that it doesn't flap in the wind. The curtains with metal grommets (instead of just the plastic reinforced holes) are better.