When does autumn actually begin?

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

Autumn is really a beautiful season. What's it like where you live? - Quora

Interesting Facts About Autumn - 5miles Blog

The First Day of Fall 2023: All About the Autumn Equinox

Cool autumn weather reveals nature's true hues National Oceanic and Atmospheric Administration

When does autumn start? - Met Office

10 Things About the September Equinox

When is fall equinox?

Tag: environment

Autumn UK: 9 Signs of Autumn to Look For - Sykes Holiday Cottages

Autumn - 絵画

When is autumn 2023? Start date of UK season explained and the meaning behind the autumn equinox

When is the first day of fall 2022?