You can simulate rain in practice if you’re going to play in the wet stuff, but as for preparing the cold? That’s a lot harder for NFL teams if you don’t live in a very cold place.
But the New Orleans Saints are playing cold-weather chess, not checkers, with starting QB Spencer Rattler and the other quarterbacks.
Per ESPN: “Quarterbacks coach Andrew Janocko took Rattler and the rest of the Saints’ quarterbacks into the walk-in freezer in the team’s cafeteria Saturday to run through plays. … Janocko joked that he got the idea after watching “Cool Runnings.” In the movie, a character sits in an ice cream truck to prepare for the conditions he’ll face as an Olympic bobsledder.”
We’ll see if it pays off, but that’s a smart way to go about it.