Quoc: Lethal Weapon is an American buddy cop action comedy-drama television series that is based on the film series of the same name created by Shane Black. The series was ordered on May 10, 2016 and premiered on Fox on September 21, 2016. On October 12, 2016, Fox picked up the series for a full season of 18 episodes. On February 22, 2017, Fox renewed the series for a 22-episode second season, which premiered on September 26, 2017.

When does season 2 of lethal weapon come out?
HW Chung: OK, some thoughts:
To answer the question, consider the following: On February 22, 2017, Fox renewed the series for a 22-episode second season, which premiered on September 26, 2017. The answer is September 26 , 2017.