I'm not familiar with Texas, and you don't show your zone, but in any case, the whacky weather this year is unpredictable everywhere in the country. That being said, depending on you heat, that's what I would do. Just try to keep the even moisture level they need. Some varieties are more tolerant than others of the heat. Mine usually shut down during 90+, but some will start blooming again when things go lower, and over winter here where it doesn't freeze. Depending on how serious (and wealthy) you are, many of us that grow orchids use Aluminet shade cloth. It can be ordered on line for any %, and custom sizes. The aluminum woven in the black helps reflect the sun/heat. It isn't cheap, but it's hard to find lower % shade cloth at your local box stores. If you can find 40%, go for it.
