Lemon was born on June 2, 2004, and grew up in
Los Alamitos, California. He grew up playing
football as a
wide receiver and was close friends with
quarterback Malachi Nelson, with them playing for the same
Pop Warner team and winning a national championship. He initially attended
La Mirada High School, where he caught 57
receptions for 784 yards and five
touchdowns as a
freshman, in addition to four
interceptions as a
defensive back on defense. He received his first
scholarship offer from the
Colorado Buffaloes during the first month of his freshman season. After his freshman season, Lemon transferred to
Los Alamitos High School as a
sophomore, where he joined Malachi Nelson. He then recorded 65 receptions for 1,062 yards and 15 touchdowns as a
junior in 2021. He was named first-team junior
All-American and first-team all-state by MaxPreps. He initially committed to play
college football for the
Oklahoma Sooners along with Malachi Nelson. However, he later flipped his commitment along with Nelson to the
USC Trojans, after coach
Lincoln Riley left the Sooners for the Trojans. ==College career==