I hope not. I just did two splits this week with queen cells that were just about to emerge. I am in central Ohio and you are better off than me. I did three frame splits in a five frame nuc for both. The frames I put in were very full of capped brood and that is what I am counting on to make up a good split before winter. I figure I have a couple months before weather change and can feed this fall. Also, I put my nucs in the garage when the snow and cold come and that keeps them in the 30's and out of the blasted wind. My nuc did great last year and I lost two of four large colonies.
Also, I feed hard candy all winter as weather breaks enough to slip the top cover off for a moment. They love hard candy that i make.
Good luck, Greg