It seems like so many afternon games in late August and early September have issues with lightning delays and/or excessive heat, it makes a lot of sense to me to play more of those games at night.
Everybody remembers that Iowa-Iowa St marathon game ar Ames delayed due to lighting where the Iowa band got harassed and provoked into their own bad behavior. After delay after delay, everybody, fans, players, and the bands, were bored and confused and hungry. Interesting memory but no need to do it again.