Oh good. I only mention it because I just got back from AZ- and they're in the monsoon right now. My mother's neighbor has a large house that is cooled only by evap and it was miserable in there. Humidity was only 30% but when it's 108-110 it's just no fun at all.
Yeah, AZ is normally 0 humidity. When it clouds up and rains here -- even in the summer -- it cools right down. It's from being so far north, if the clouds come in that's all the cooling you need.