What does that have to do with the price of tea in China? There's much more snow in KC than LA or Vegas, should we break up that division too? BTW with Denver being in that division as well they have teams in 3 different time zones!! THE HORROR!
I am also relatively certain that Miami gets significantly less snow than Buffalo, NY or New England. You never know with climate change and all that but...
There are really only a couple divisions in the NFL where there arent significant climate differences across the division or a time zone crossing.