Cicada 2024 Timeline Chart

Cicada 2024 Timeline Chart. With spring in full swing, a subterranean clock is ticking in more than a dozen states. In a few weeks, over a dozen states will be abuzz as trillions of periodical cicadas will emerge from their yearslong underground.

That spring, brood xiii and brood xix emerged together into a newly enlarged united states. Once the soil in those places reaches 64 degrees fahrenheit.