The days are shorter and the grass will be under less stress. It is time to watch for Brown Patch again (see Spring Turf Grass Maintenance recommendations). Any fertilizing should be directed toward root growth. This will help the grass store nutrients before going into dormancy. If you are fertilizing properly, you will not see a lot of leaf growth with this application of fertilizer.
Your mowing frequencies should be less and the grass should require less watering. If you need to water, do so during the daylight hours. This will help reduce your chances of getting Brown Patch.