How Long Will The Cicadas Be Here In 2024au. The presence of cicadas will last only about four to six weeks. Periodical cicadas, which only live in midwestern and eastern states, spend either 13 or 17 years underground before coming out as adults in mass, synchronized emergences, while annual cicadas, which live all over north america and other parts of the world only spend a few years underground before appearing above ground in smaller, non.
Cicadas count years, likely using the flow of tree sap. After 200 years, cicadas are here by the trillions cicadas on a tree trunk in bloomington, indiana in 2021.