Every time the temperature approaches 100 in late September, I think back to my first quarter at UC Berkeley, 30 years ago. At that time Cal was on the quarter schedule, so classes had started on September 22. The following week started out hot, and then turned miserable. Temperatures in Berkeley went to about 103, with very little cooling in the evening. That would have been bad even if you lived in an air-conditioned home, but if you lived in an 8-story dorm without air conditioning, you were in big trouble.
And so we were. No one got much sleep that week, and the people on my floor (3rd floor, Deutsch Hall) were just happy that we were on one of the floors with a common room that came complete with balcony. I remember sitting out there well into the wee hours of the morning, talking about nothing and everything, and generally having a great time.
But damn, it was hot.