...and if it's Wednesday, it must be snowing in Farmington.
I don't know how obscure that title line is, but we quote it all the time in my family. According to Wikipedia, "If It's Tuesday, This Must Be Belgium is a 1969 romantic comedy film made by Wolper Pictures and released by United Artists. The title, also used by a 1965 documentary on CBS television that filmed one such tour, was taken from a magazine cartoon caption*, humorously depicting the whirlwind nature of European tour schedules, which formed the premise of the film's plot." Supposedly the cartoon was in the New Yorker Magazine.
So if that expression is all about predictability, so is the snow on Wednesdays. The University has had 3 days this semester where it closed due to snow (well, one was ice and snow) and all 3 were on Wednesdays.
Today it snowed all day long. It wasn't a heavy snow, and they didn't close the University, but there's at least 2 inches accumulated and more coming down.