Nobody likes waste or throwing money away. So, for years, houses in central Wisconsin were not equipped with air conditioning. Sure, it got quite hot and humid at times but those times were rare. It made sense to just experience them, maybe even appreciate them, instead of fighting them with special installations.
Similarly, south Texas does experience some strong cold spells. But for economy's sake, it doesn't make sense to build houses and buy snowplows for the number of times it is actually more wintry than in Wisconsin. Even the animals and plants seem to be prepared to stand the occasional brrrr instead of actually planning on living easily and comfortably during those rare winter storms.
It easy to think in primary colors: north is cold and south is warm. True enough, basically, but given human ingenuity, flexibility and culture, it is possible to have a great old time skiing, skating and driving in the north while shivering, quaking and sliding off the roads with cold in the south. You have your basic and reliable trends but you also have your random but gripping deviations.
