My interest is mainly in "applied weather"--weather where it intersects my other interests:
* A check of wind speed and direction before a long roadtrip tells me what to expect in terms of fuel economy and aggravation while tracking. Ambient temperatures also shape my expectations of engine and transmission performance while the car is warming up--the vast majority of modern cars with automatic transmissions have temperature sensors for both engine coolant and transmission fluid, and low temperatures as reported by each sensor trigger distinctive cold operating regimes for both the engine and transmission.
* Predicted loud cover measures my opportunity for photography without light metering (I go by the rule of 1/125 sec at f/16 and ISO 100) and also my likelihood of finding deep rich saturated blue sky as a backdrop. I am a zone system purist using a digital P&S camera (which behaves more or less like slide film) and hate blown-out highlights, and even when dense cloud cover diffuses light completely, bracketing exposures on top of varying composition can add a lot of hassle.
* The story of the Weather Bureau and FCC's no-warning policies with regard to tornadoes appeals to my interests in history and public choice theory.
