I'm glad it's not just me. 
We had a local TV meteorologist, now retired, who used to talk about that. Add to it, and maybe it just confuses things, in these parts anyway, it can still be stinkin' hot in September. I remember one September when I was in junior high, I came home from school one afternoon essentially suffering from heat exhaustion (of course no air conditioning in a school). My mother had me sit in a bathtub full of tepid water till I cooled down.
Very smart of your mother to use tepid rather than cool or cold water. Not to bring in yet another puzzling matter of physics but I've read it's best to go with tepid. Maybe because if it's too cold your body warms up further in a misguided way of countering it?
And yes, I was about to say it starts getting hot at the beginning of June and cools down in September. Then I remembered that in New Orleans it starts getting hot at the beginning of May and doesn't cool down until October. And no doubt the opposite could be said for Minnesota winters. (Minneapolis and New Orleans are like symmetrical opposites.)
(I don't find these dates hard to remember, but I'm a geek about such things. 
)
I can't always remember the exact date of the equinoxes (20th? 21st? 23rd?). Not the solstices, though -- they're too important as the holidays Longerdays and Shorterdays.
On another topic, what's with the normal font?
