If they're using a similar method, why not. I'm pretty sure they have fine-tuned the parameters by now, so it would mean we could have fine-tuned parameters, too
Or even better yet, make those parameters per-world settable in world.ini, with the craftbukkit values as the defaults.
Also, this algorithm supports changing the weather via a plugin quite easy - just call the same piece of code.

Also, this algorithm supports changing the weather via a plugin quite easy - just call the same piece of code.