Hottest game for me was 2000 vs Iowa at Arrowhead. It was just absolutely miserable. I was only 8 so it’s possible I’m misremembering but I think it’s the hottest I’ve ever been.
runner up for hottest game for me is 2013 NDSU. What a terrible game all around.
I’ve gone back and forth on coldest. Either 2013 OU or 2019 ISU. Both were miserably cold games.