I would bring in the sick ones, the others as long as they are always in shade out of the sun they should be ok. Just make sure you are checking them to make sure if they need any water. Should water ever 5 to 7 days if they are about dry. With your heat you may need to use a skewer and check ever 4 days.
The ones that are sick I would bring in and place next to a window where it gets light through a curtain. Filtered light only. You don't want the sun burning the orchids thru the glass. So a sheer curtain works well.
I hope this helps you just a bit.
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