Among the most miserable:
1991:
Cold (34 degrees), windy, rainy day in Lincoln, saved only by Jones late 15 yard TD run that led to 19-14 NU victory over OU.
I was a UNL student at that game.
My personal worst weather experience for a game was September 28, 1985 against Oregon. Nebraska won 63-0 (back in the days when Oregon sucked).
1:30PM kickoff. The temperature fluctuated between 38 and 40 the entire game with a 15-20 MPH sustained wind and drizzle. Wind chill was around 30. Cold and wet.
I got to take a buddy from high school with me to that game, as no one else in my family wanted to go in that miserable weather.
It's one thing to have weather like that in November -- when your body has started to adjust to colder temperatures. But in September, when the normal high is 75, when it was 71 the day prior, and 90 the Saturday prior -- your body hasn't adjusted to weather that is more typical in November than September. I was sitting in the South Stadium with that North wind driving drizzle into my face -- absolutely miserable (except for the scoreboard).