Stonerdanswered grow question 4 years ago Indica varieties do prefer colder climate and perform better in them but usually when a plant needs a change it'll show it!
If your plants don't show any signs of radiation/heat stress and damage then you have nothing to worry about, your tent climate is pretty good in terms of temps but don't let it go over 28 degrees Celsius (82-83f) unless you intend to use a Co2 system. As for your humidity at this stage getting it to about 60-70% would be best, but 40-50% would be good too (can also be sustained throughout the whole grow with good air circulation). Try getting a small humidifier for your tent, it'll raise the humidity quite easily and will keep it stable! if a humidifier is too much for you then a wet towel (make sure it doesn't touch the plants to avoid mold/mildew) hanging in the grow space might help increasing the humidity.
Hope this helps! Good luck and happy growing :)