The coldest World Series was in 1997 with the Florida Marlins at the Cleveland Indians.
The first two games was in Miami, but when the series shifted to Game 3 in Cleveland, it was going to be chilly. During batting practice, the temperature dropped to 37 F and it only got worse during the game. Despite the unfavourable conditions, the Marlins proved victorious with a 14-13 win.
The conditions of Game 4 weren’t any better. It was snowing on the teams during batting practice and ice patches formed on the infield during the game. At first pitch, the temperature was 38 F with a wind chill of 18 F, officially making it the coldest World Series game on record. Major League Baseball didn’t track weather records until the 1970s so it’s possible there were colder games in prior seasons. Game 5 was a bit more mild with a 46-degree temperature and 12 mph winds.
The Marlins went on to win the World Series in seven games.