No reverse. New England and eastern Canada are warmed by the same currents too, albeit not as much. The heat generally comes from the Caribbean. North Korea and Hokkaido have far colder winters and milder summers at similar latitude.

The entirety of France, including its southern coast, is north of Boston.

Acktyually, the southernmost point in France is 50°01′ South (Îles de Boynes in the southern Indian Ocean). 🤓

Somewhat more legitimately, there are also inhabited French lands further south than Boston: Corsica, French Guiana, French Polynesia, Réunion, etc. Corsica even counts as "Metropolitan France" (as opposed to "Overseas France") while still -- barely -- beating Boston by about 1°.

And it's not even just the northern parts. Here in the Ozarks we see everything from sub zero temps to over 100 every year.

The UK is the most fun one to do comparisons with. The north end of Scotland is at the same latitude as Churchill, Manitoba. Churchill has polar bears.