When Are Cicadas Coming Back 2024. Adult periodical cicadas from brood xix are now completing its emergence as the brood is out in full force in states. Cicadas will become a sight to see across several states, though as few as two—illinois and indiana—will be able to see both broods.
— billions of the winged insects will make an appearance across the midwest and the southeast, beginning in some places in late april, for a raucous mating ritual. Science apr 30, 2024 6:01 pm edt.