The script does work, those who are have problems installed it wrong. What I am having troubles with isn't really so much the script, but when I sent it to a rather large area to rain on, it causes massive lag after the rain ends.
Also, I would like to know how I would set it so it rains in a certain area consistently, not as a global event.
Thanks for releasing it, it is a really nice script, I just hope I can figure out how to remove the lag problem it causes.