Vigrass was born in Calgary, Alberta to parents Richard and Sandy Vigrass. His uncle, Don Saxton, played on the Canadian indoor volleyball team at the 1984 Los Angeles Summer Olympics, and his cousin, Ben Saxton, played beach volleyball at the 2016 Rio Summer Olympics. Vigrass started playing volleyball at the age of 13, and played in Calgary for the Canuck Volleyball Club and Western Canada High School during his high school years.