My worst would be the infamous Nottingham Forest season opening game about twenty years ago - despite it being warm, sunny and being back in Brum about 6pm.
Boxing Day 1982. Trounced at The Sty.
Not so much infamous for the game or the result, but the 500-or so Villa locked out of the away end (I was one of them) and a few hundred more locked in a cage at Nottingham station without basic facilities.
What was the night actually like aside from horrific shambolic and embarressing? What was it like around the ground before and after? Inside the ground?