He started at Washington State University in their veterinary pre-med program but switched to art after two years.
[2] Weller previously served as president for the Society of Illustrators of Los Angeles.
[4] In 2016, the Kimball Art Center had an exhibit called "Don Weller: Another Cowboy" which included 90 Western watercolors.
[5] As of 2006[update], he lives in a farm in Utah with his wife and their animals, where he paints pictures of cowboys and related subjects, and breeds and competes cutting horses.
Because of declining eyesight, he has turned to writing mystery novels set in Summit County, Utah.