I don't know where you've landed in the United States, but the notion that Europe is "bloody cold a lot of the time" suggests you don't actually know much about either cold, or continental interior temperatures. There isn't a single month of the year in which the average Low temperature is below freezing in most of Western Europe, outside of the Nordic countries. Contrast that to Minneapolis, Minnesota, where the average daytime High temperature is below freezing for a quarter of the year. You have to go way East into the continental interior - Moscow or further - to find temperatures that are comparably cold.
The interior cities in North America that are at comparable latitudes to Europe - Winnipeg, and Edmonton, e.g., - now there you get some actual "bloody cold." The air at -40C (or F) has a special quality to it.
Europe does indeed have generally milder summers, due to its maritime exposure and the Gulf Stream, but also due to it's more Northern latitude, but "bloody cold" it is not.