Season 18

Season 18 of Arthur premiered on PBS on September 29, 2014 with "The Friend Who Wasn't There/Surprise!". It concluded on September 11, 2015 with "Shelter From the Storm Part 1 & 2".

The season was first announced on June 21, 2013 and was in production throughout 2013 and 2014. Storyboarding began around early December 2013. It is the third one produced by 9 Story Entertainment. There were 10 episodes in it.

Lydia was going to appear in this season, but the episode "Little Miss Meanie" was made part of season 19 instead.