In different ways! Very little of the outside seasons make their way down into the caves. A little snow, a little sunshine, depending on the time of the year. Different parts of the Underground were their own seasons themselves. Snow year round in one town, heat all year long in another. You do not lack for variety!

-Not in her opinion, at least. Still, there's also something enchanting about a world that responds to changes in the seasons as a whole, not simply kept and maintained the way that their magical kingdom had been. (Which was very good for the Snowperson!)-

It is unfamiliar, and I will enjoy learning what it is like firsthand.