As soon as the calendar flips to Sept. 1, America collectively decides its fall, even if the weather hasn't quite caught on.

Flip flops are traded for flannels, iced coffee gives way to pumpkin spice lattes and grocery stores explode with everything cinnamon, apple and orange.

Technically, summer still has a few weeks left, but culturally? It's already sweater season.

When is the first day of fall ? When is the autumn equinox? Is it almost time to pull out the sweaters in Alabama? Here's everything you need to know about fall 2025.

When is the first day of fall?

The arrival of autumn is just around the corner. The fall equinox and the first day of fall will begin on Monday, Sept. 22, at 1:19 CST in the Northern Hemisphere, according to the Old Farmer's Almanac.

What is an equinox?

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