For some reason my Phals, along with all the Cattleya alliance orchids seem to do just fine outside, from April until November. The vast majority of them (not my "baby" orchids) will be under large oak (majority) and cedar trees. My theory is that three factors are involved.
1. The plants ONLY get early morning and/or very late after sun. Otherwise it is dappled shade.
2. There is often a gentle breeze, more noticeable under the canopy of oak/cedar trees.
3. These trees produce a huge amount of water vapor and the hotter the day, the more the moisture. One can stand under the canopy and literally feel the moisture on the skin on really hot days.
I also have four fans going in my "Orchid" gh and three going in my "Everything Else" gh.