Rain is just horrible noise in a video game. I like just fine in real life on hot summers afternoon, sitting on my wrap around deck with a glass of lemonade and watching the wife in her sun dress twirl around and enjoy the sun shower just as much as the next guy enjoys that with his wife.
In a video game, I'm getting away from crappy ole, frigid temperature of winter. Show me the sun, and fun.
Maybe I'm alone is this and the weather adds realism for some players, me hate it. Hate it almost as much as the wavy camera effects trying to simulate drunkiness or dizzy effects, and screen shakes.
meh, to rain.