day to night temp change and indoors growing

[ShadePlant]

Nogreenthumbs I think our environments are similar. I live in New Orleans and it often doesn't cool down at night past 80 degrees or so in the summer. My orchids are on shelves by an east and north facing window in a sunroom that only gets overflow AC in the summer. In the winter I turn a heater on if the temps get too low. I have phals, paphs, dendrobium, epidendrum, and a few inter generic that seem to grow well in there without the drop in temp at night. It's having a drop in the winter that helps trigger the flowering for many of them.