As long as I have been alive and that I can remember, Winnipeg doesn't usually see any significant snows until after Haloween. In the last decade, the first real snowfall has usually occured in late November, early December. The norm for snowfall in this city is changing, resulting in later snowfall and earlier spring melts.
You haven't been alive very long then. For most of my life, I'd say snow in Winnipeg has been a 50/50 proposition on Halloween. It used to be an annual discussion when figuring out costumes - we always had to plan taking snow into account, and some years wear the snowsuit, some not. And as a person having a birthday in very late November, I can tell you how many years I experienced in my life with zero snow before my birthday - exactly one.
Now, we may be having differences of opinion on what "real snow" constitutes. I've seen 1ajs's pictures and to some, that isn't really snow.