These succulents are naturally able to store water in their leaves, stems or roots. Most of the succulents, depending on what variety they are, go dormant when the temperatures go cold. Unfortunately, relative humidity is higher when it is colder, especially at night, there is no heat to make the water evaporate, and that will affect the succulents who likes to be on the dry side. But these varies depending on what type of succulent, some have good cold weather tolerances.
That is why I often ask, where is the plant being grown, indoors or outdoors, what type of container etc. etc..Environmental issues and handling affects them a lot. We often overlook the changing seasons, the variance in temprature and light duration which is very important to note when growing succulents, as we do with other types of plants we grow.