Do your players complain about lag whenever the rain starts? I agree, it's not your fault that their computers aren't up to snuff, but now they don't have to be! With LaglessWeather, users won't be inconvenienced when storms begin.

Commands

/laglessweather (/llw) [on|off]: Turn laglessweather on or off for yourself.

Config.yml

default-on: If true, listed players will see storms, unlisted will receive notifications when storms start/stop.; If false, reversed. Listed players will not see storms, etc.

Permissions

laglessweather.opt: Defaults to true. Must be negated by a permissions plugin to deny a player access to the /llw command.

FAQ

Why not just eliminate storms entirely?

My main motivations would be, to quote from the Rain wiki entry...

Mobs on fire will be put out on contact with rain; this prevents skeletons and zombies from burning in daylight.
Fish are more abundant during rain.

Will this work with Bukkit X.X.X?

Yes. It's an idea I had when player-specific weather was added to the Bukkit API in... 1.4.7? It should never break.

Future plans?

Originally, I planned to change player time to reflect actual storm light levels, however, it ended up looking pretty bad.
I have no plans to develop this plugin farther. If you want the source, here it is.