Sign of fall, earlier sunset, and crickets

It was already dark when I arrived at the station near home.
I really felt that it's already been fall although it's hot and sticky because of typhoon to the south west.
When I got home, my mother told that crickets were stridulating near the house last night.
She looked a little bit pleased, because she had sounds of crickets as good as we had lived in Mizusawa, Iwate, where crickets playfully made sounds every long nights of fall.