It changes my sleep schedule! I try to develop film in the very early morning. I cool my distilled water stop and fixer in the freezer... run the ac... the same for printing but I do less printing in the summer anyway.
I'm in a holding pattern for mounting prints right now, I just can't bring myself to turn on the heat press. I live in a very small bungalow and having that thing on for any length of time when it's this hot is not practical.
As far as shooting it doesn't have much of an effect on my. Outdoors, I like to photograph in the early to mid morning or later afternoon to early evening. Indoors, well, as long as there is shade or AC it doesn't much matter.