I still pronounce it FebUary and Wednesday as Wedn'sday.
I seems to me to be a distinctly southern English thing with an extra R in words, that doesn't occur in the Scots version of English, but is perhaps present in some forms of American English, or whatever we want to call it. Is it not really a Thames Valley thing with the extra r?
And yes, I do remember that in the first Harry Potter film it is Hagrid who pronounces withdrawal as "withdrawral" even although he usually sounds as if he came from Rutherglen!