Presenting the TV weather report and telling you whether or not you need an umbrella is the least part of a meteorologist's job. Economic forecasts, infrastructure planning, and agriculture are all to some extent dependent on the weather and climate.
Predicting the weather relies on accurate observations and highly complex mathematical models. With extreme weather events such as hurricanes becoming ever more common, getting it right can literally save lives.
Climate change is another issue of growing importance. Most bachelor's degrees in meteorology study it in detail, often in conjunction with subjects like geography, sustainable development, and atmospheric sciences generally. Other popular minors include mathematics, computing, physics, and electronics.