Because the temps were low and the light was dim, it is possible that your Philodendron may survive what would ordinarily be death-producing drought.
The key is the condition of the roots. If there was enough warmth and moisture to keep some of the roots barely alive, then it may recover. If all of the roots died, then there is no hope for it.
plants under stress shed older leaves and stems so that the roots will have less to support. So the dead leaves and stems are not adding any stress to the
plant. However, you may as well remove them because they are unsightly and they will not recover.
The repotting, however, may have added stress to the roots. I mention this for future reference or for others. It is never a good idea to repot a
plant that is sick or under stress. Likewise, fertilizing ailing
plants is not a good idea.
With good light and proper watering, your
plant should show small signs of new growth within the next month if the roots are still viable. If not, I am afraid you will have to discard the
plant.
Good luck with it!