Good luck with them. Up here a late June swarm has little chance. I hope you can save them.
I have 39 hives right now, so I can take some brood and stores from other hives to help them out. Plus we usually have a pretty good nectar flow off of Golden Rod, Milk Weed, Iron Weed, and a few other nectar sources through most of October. If the queen is any good at all they should make it.