PeteAtoms
FormulaRandom
An in game book guide I read indicated Skyrim has valleys that aren't covered in snow all the time. Of course the developers can alter the world in any way they like, since they are the writers.
Yeah, it was a complaint by all the lore-obsessed nerds that Cyrodiil was original described as a region of jungles, which in no way reflect the landscape in Oblivion. The writers/developers retconned the in-game book that said that and explained it away by some sort of divine or magical occurrence.