| The temperatures are not as important as other factors, especially if they are only in the 80sF. All but the coolest growing orchids can easily tolerate those temps.
What is more important is keeping them out of the burning, direct sun, and keeping the humidity up around them. Even cool loving Masdevallias can easily tolerate temps in the 80s+ if they are kept moist and humid.
Oh, ad lots of good air circulation, very important!
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