 Chicago, being near Lake Michigan, boasts summers which are quite humid (85–90 °F on average), and playing in this heat day after day might have taken its toll.From August 14 through the end of the season, the Mets, who played mostly night games, had an amazing 38–11 record, finishing with 100 wins while the second place Cubs slumped in September, going only 8–17.In the decade of the 1970s and through the 1983 season, the Cubs rarely tasted few substantial successes.