Not exactly. Players can choose between the terrains they have downloaded for offline play. Offline, players can affect things like time of day and wind settings (see
Help: configuring an arena).
Terrains can be built to include heavy cloud cover, and things like snow coverd, or desert terrain, but that is a totally different matter. Actually I am not even going to post a link to it as it would be a total waste of time. A player should gain experience using the game before even considering building terrains, as they have nothing of value to offer without an understanding of how terrains effect gameplay.
