Weather (i.e. cloud cover) is built into the terrain, though there is a utility for editing it. Any time it is changed, the entire terrain has to be reloaded in the arena (and by players when they enter the arena the first time after it is changed). Some of the maps we use have quite a bit of clouds (ala the Stalingrad terrain), while this one is a bit more sparse (though there are some here and there). It's just the way the terrain was designed. Thanks for the feedback.
Sabre
CT Team