Orchids outdoors in summer - what do you do about rain?

[Laelia purpurata]

I have my orchids outside for the summer with the shade lovers on my porch, which has a roof, so they get good air circulation, etc. My Catt's are out from under the porch so that they can get some direct sun and I was wondering how you deal with rain. Sometimes it rains every other day here in the summer and I should think that that would be too much watering for a Catt. Do I need to bring them onto the porch every time it rains or is it alright to leave them out?
Thanks everyone!