spells in the trick or fantasy section were filed there because most don't work and it takes too much time for one person to delete them all. weather spells are kind of a grey area, so avoid those sections until you know more about magick.
for the control water spell, no. we work with the elements, but we do not control them. some people claim they can, but no spell can make you a waterbender. [for an avatar reference] simple rule of thump, if it goes against human nature, it cannot be done.
if i were you, i'd work on meditation and charging/grounding energy, before trying another spell, since visualization, focus, intent, and energy are what's needed for a spell to work. [you also need to work for your goal, but i'm just going with what you need when casting the spell]