I didn't minor in anything, so I can't really say, but my friends who did it seemed to work out for them. I only said minoring, because double majoring with meteorology as a major would be nearly impossible to get done in 4 years. Minoring in a related science shows a variable skillset that may be of use to some employers. It can also help you get into a grad school depending on what you want to do. A friend of mine majored in Met and minored in Political Science so that he could go to grad school and enventually get a job in the science policy world. without the minor, it probably wouldn't have worked out.
a minor in a related field can only help you get employed, I don't see how it could hurt