Interesting question. But just what are you asking? Do you drink differently because of heat and humidity? Or, do you drink different products when it's hot and humid?
One thing to remember, winds and high altitudes hide perspiration loss because of increased evaporation. Good old humidity is a great at reminding us of just how much fluid we are losing during riding.
One of my worst cases of dehydration happened last year on a hot-windy day. The sweat evaporated so fast I wasn't even damp. I thought I was fine until 2pm then I cramped and bonked big time.....even after guzzling a couple of bottles I dawdled home 10lbs under weight.....
I understand the same thing happens to cross country skiers and hikers sometimes. It's the altitude. (low humidity)