When does autumn actually begin?

If you ask a meteorologist, autumn sets in when the average temperature drops below 10 degrees Celsius.

Autumn equinox is the first day of fall. How is that different from a solstice? : NPR

Environment

Fall 2018: Facts To Know As Autumn Comes Around

Interesting Facts About Autumn - 5miles Blog

Tag: environment

Autumn - 絵画

Why Do Leaves Change Color in the Fall?

When does Autumn start? Defining seasons Official blog of the Met Office news team

When does autumn start? It depends….

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