A Season

Uniform unchanging weather patterns permate most of Potestatem. A few pocket regions are known to have reccuring yet changing patters throughout the year. These consistent and predicatable changes in the weather are known as seasons.
An example of a season would be the Lutae Forge Holds warm and cold seasons. During the majority of the year the surface of the holds land is only a little cold like many dwarvish surface lands. Unique to the Lutae hold is the months of freezing weather that consistenly come near the end of the year.