Weather can have a major impact to some. Skill athletes (WR/RB/TE/CB) that don't know how to run on snow and grass tend to be much more tentative. I'm blanking on the game, but we played on earlier where the other team looked like they were tip-toeing most of the first half. Edit- I think it was Carolina. And weather will effect anyone that has to hold the football. It is pretty well known about QB hand-size and cold/wet conditions (if not, just listen to Aikman brag about his big hands this week during the Packer game). Less impactful, but still some impact on RBs. And catching a frozen rock when your hands are cold isn't easy either. All the conditions effect both teams equally, but when you've done it many times, it makes it easier mentally to prepare for it and know some tricks on how to make it easier. I saw somewhere that the Rams were 1-7 or 1-8 all time in playoff games below 30 degrees. That isn't Goff, but just the team in general.