How hot is too hot?

[Goodkoalie]

I live in the Central Valley of CA. Our summers are HOT, We'll go weeks and never drop below 90 with multiple days over 100. A positive is that due to my location, the temperature drops an average 30-35 degrees F at night. In july, the average summer high in the low 90's, and the average july low is in the mid 50's. Summers are also incredibly dry. Frequent watering and a source of humidity would be a necessity I assume. I am wondering if the weather gets too hot outside for cattleyas, dendrobium nobile. I think my laelia anceps will do well outside, since I have read that it enjoys hot summers.