I'd say the primary difference for day to day weather use is cultural. If you grew up with F or C, that's what you're used to and is what's best for you. I'm i

I'd say the primary difference for day to day weather use is cultural. If you grew up with F or C, that's what you're used to and is what's best for you. I'm in Vancouver, BC. I'm really close to the US border and have spent a fair amount of time in the states traveling. Going to the states is always confusing as I don't have the experiences to know what their temperatures mean, nor do I have a map in my mind. I know what 0C, 5C, 10C, 15C, 20C, 25C, 30C and 35C feel like. It's no different that 30F vs 70F for the author. I know freezing is 0C and boiling is 100C and the body temp is 37C. I have know idea what the corresponding values are in F, and I really don't care because it rarely affects me and if I need to know I can ask my iPhone. The one place this isn't true, at least in Canada, is cooking. We still use the imperial system. The oven is always at 350F, and sometimes 425F. But those have no relation to my normal day to day temperature uses. They are just numbers I'm used to because I use them on a day to day basis.