Was at the -20 degree wind chill game. Three layers of clothes, chemical hand warners, and newspaper (what's that?) on the seat and concrete for insulation.
Another game we wore tyvek suits (brother worked at CECOS in NF then). Bad idea. Was warm but they keep the sweat inside. We were drenched by the 4th quarter.
A few years ago, went to the Jets sunday night last game of the regular season. Was 5 degrees by end of game. Never again. Had trouble walking to Hammers lot from the scoreboard end of the stadium. Legs were so cold, didn't want to work. Never again. September or October games for me.