Yes, I've heard that commonly pronounced by Americans. Not to mention that most will also try to correct you if you dare pronounce it differently than they do!
I'm an American and don't remember ever hearing this pronunciation. Wiktionary lists /draʊt/ for both the US and UK pronunciation. America has a lot of regional accents though, it's not unbelievable to me that this exists somewhere.
I’ve also heard it as drouth. It is, in fact, an archaic alternate spelling