should i be worried?

i came home from work today to find that my power went out... no power means no heat! i'm not really concerned about the lighting and ventilation because they need to be in the dark cycle anyway... my problem is when i checked on them the grow room was 59'... i have them back up to a comfortable 75' and they look fine but i'm worried about any damage it may have done and not showing it yet, they have never been temp stressed up until today, will my babies be ok or what?

you should be fine. about 74 F during lights on and 65 F lights out works real well for my plants.