Makes me curious, is there a database anywhere with game temperature records?
Fans have good memory of the most extreme heat/chill games, but it's informal.
There's no public facing database that I'm aware of, but they do keep track of temperatures at kickoff in game notes posted on cyclones.com.
Looking at the game notes from 2013, UNI was "92 degrees, the warmest kickoff temperature in Jack Trice Stadium history." KU was "8 degrees, making it the coldest game in Iowa State history."
I'm fairly sure the cold-weather record still stands, I don't recall if anything has beaten the warm-weather record. Nor do I know if there was ever a warmer game at Clyde Williams.