I find Pachyveria likes it much drier and more warmth; it is so easy to rot the stem of Pachyverias. This winter has been relatively drier, so I left it outdoors, but other winters I overwintered it indoors to protect the plant from too much cold and wet conditions.
Graptoverias, are actively growing during cooler season, getting that chilled reddish/orange look and can tolerate a bit more moisture during the cooler season, as long as media is really well draining.
But I have to define what I mean by cool conditions for our area here that succulents like, temps in the upper 60's to low 80's. Anything above that slows them down as it gets way too hot and dry for them. Our temps during summer sizzles very high and dry to the triple digits. At that point, the succulents naturally slows down to conserve its resources.
