When Are Cicadas Coming To Chicago 2025. The cicadas will remain underground for a dormant period of two to 17 years, depending on the species. By nbc 5 staff • published may 6, 2025 • updated on may 6, 2025 at 9:29 am.

Here’s what to know about the 2025 cicada emergence in chicago and illinois: Il will have rare double brood emergence of cicadas.