For a few weeks I have been acclimating to hot, humid conditions by doing my training rides in the middle of the day with temperatures in the mid 90's.
I went out yesterday and felt cold. I thought it must be in the 70's but low and behold, it was actually 87F. A month ago, I would have been sweating profusely in 87F. On a 2 hour ride, I drank 16 oz of plain water. It was a pretty easy ride without a lot of hills, averaged 16 mph