Monarch Butterfly Migration California 2024 Dates

Monarch Butterfly Migration California 2024 Dates. In the 1980s and '90s, more than a million made the trip. Every year, monarch butterflies from all over the western u.s.

California is a hot spot for monarchs, both migrating and overwintering is select locations. Unlike most other insects in temperate climates, monarch butterflies cannot survive a long cold winter.