After The Addams Family was canceled, Weatherwax found it difficult to get work in Hollywood (a common occurrence for child actors) and was typecast as Pugsley well into his teens. At 17, Weatherwax entered the U.S. Army with his only childhood friend, Adam Knowles. He makes appearances at conventions and still offers his services for acting jobs ranging from voice-overs to personal appearances.

Ken Weatherwax has been working behind the camera as a movie studio grip for a number of years. Said to have worked as a set builder on movie lots 1992-2002.

His aunt was Ruby Keeler. His brother is Joey D. Vieira, also known as Donald Keeler, who played "Porky" on the first three seasons of TV's Lassie, beginning in 1954.