Skinner was born on December 9, 1996 in Mesa, Arizona to Cris and Kym Skinner. She has three older siblings, Jeremy, Chelsea and Katie, two of whom are former gymnasts themselves. Skinner is a member of The Church of Jesus Christ of Latter-day Saints.
She trained with the coaches of Desert Lights Gymnastics in Chandler, Arizona. Her personal coach was the head coach of the club, Lisa Spini. She attended Higley High School in 2011 as a freshman and was home schooled starting in 2012. In November 2014, Skinner committed to join the University of Utah program as a collegiate gymnast beginning in 2015, later deferring this to 2016 to pursue a place on the USA team for the 2016 Summer Olympics.