It's only mid-August, and some of the trees are starting to change colors already.
Yesterday, the temperature was 100°F. Today, the high was 72°F.

Quite a change!
We've suddenly gone from above normal temperatures to below.
Today felt like Fall, but it should still be Summer.
Who knows what next week will bring? Or the week after.

Sycamore trees aren't the most glamorous in their fall garb, & this is how it usually starts in mid-September.
This year, some leaves have already fallen to the ground in August.