Welcome to Just Answer,Yes, it's ok to feed this time of year. Weed and feed is typically used late Spring but you could use it now. Jusat follow the directions on the bag and note the warning about the turf varieties that should not use this type of product. Do not use on St. Augustine grass, Floratam, Dichondra, Lippia, carpetgrass or bentgrass lawns. None of these varieities are common in the Northeast. Also do not apply when it's windy or the temp is above 90 degrees.