Brian, I honestly think you'd be better off just getting a four-year B.S. degree in Meteorology. I think that by the time it's all said and done, less time and money will have been spent going that route, and it will be more rewarding for you. Graduate school is a whole different animal than undergraduate studies. As you might have realized by reading the previous posts, there usually is a strong research component, though you can get an M.S. degree without writing a thesis. I think in that case they give you an exam that's probably really difficult. Also, depending on how you do it, you won't have to take "simple" classes again as an undergraduate. As Dan suggested above, you could take calculus and physics classes at a community college and then transfer into the B.S. program. Though you might run into issues with credits transferring, I'm not sure how that works. Just make sure you get a strong background in calculus and physics, as it's essential to understanding the material presented in a meteorology class (both graduate-level and undergraduate-level).
I'm a first-year M.S. student in OU's Meteorology program now, and I can say from experience that it's rough, even coming off a four-year B.S. degree in Meteorology at OU. The classes, while incredibly interesting and enlightening, are also very difficult. That's not to say that the undergraduate classes aren't difficult (they are), but they're more manageable for someone just getting into the math and physics.
I'm not trying to discourage you from pursuing some sort of Meteorology degree. In fact, want to encourage you to do so, if you're interested in the subject material. However, you should probably know what you're getting yourself into.
Good luck in whatever course (... heh ...) you decide to take!