Many yards have slowed down, or even stopped growing. I have many yards around St. Louis that are still growing and many that have stopped. A healthy lawn with a good fertilizer program should still be growing and should need weekly lawn mowing. The warm weather will keep the grass out of the dormant stage and continue healthy growth.
Right now many leaves are still on the trees and have not fallen to the ground. It may be easier to keep up with the leaves if you do a little at a time. It will be beneficial for your yard if you remove the leaves before winter. This will allow the lawn to absorb much needed winter sunlight.