I am one of the uncultured few who's never seen a single episode of Xena. I beg for forgiveness!
Hmm, on one hand it would make sense but on the other hand I feel like that would allow writers to limit her even more than they do now. At least with weather we sometimes get cool visuals. If they shift her to strictly manipulation of energy all we'd get is vague energy blasts shots. On the other hand (yes we're having more than two hands) given the time and time again definition of her powers and how it operates, her being able to just manipulate weather doesn't really "fit".