Carol, our max official temperature both this summer and last summer has been 93deg. I think the orchids acclimate to it, and survive because of good air movement and the killer humidity which feels bad to us human beans because our sweat won't evaporate to cool us off, but is great for plants because they don't lose much moisture through their leaves. So, 93deg. here is a lot different to a plant than 93 where you are, with lower humidity.
Mine are all outdoors but inside the pool cage. The screening shades about 20% of the sunlight. There's a 6ft. x 10ft section of 30% Aluminet over the west side of where my orchids live. So they get morning sun and afternoon at least 50% shade. When the sun is at its highest in June my big clump of bamboo also shades part of the cage in the afternoons which works out nicely.
Whenever it rains, the temps drop by at least 5deg. sometimes 10 if it is a good t-storm with outflow. It has rained a vast majority of days this summer, since about mid-June. So other than black rot and scale, the orchids are thriving!
November and May are hardest on the 'chids, when it can still be hot, but the humidity is lower. I do a lot of spraying with the hose then.
