it was the first February since 1872 (when records were first kept) during which there was no day with a high temperature below freezing (32ºF).
The coldest low temperature for the entire winter was 14ºF. (That's so far, of course. but not likely to get any colder at this point). No other winter on record has been that warm.
Boston is on the coast and weather there is moderated by the sea. It's been somewhat chillier where I live, but still quite mild as New England winters go.
Make of that what you will.
(It's fine with me.)