Timmons attended Wilson High School in Florence, South Carolina, where he played football and ran track. In football, he played tight end on offense and linebacker on defense. He was teammates with Justin Durant until his junior season. During his senior year, Timmons registered over 150 tackles and two sacks, while also catching 47 passes for over 800 yards and five touchdowns as a tight end, which earned him all-state first-team honors. He was also awarded as the Defensive Player of the Year and received Super Prep Elite 50 honors. He was also selected to play in the 2003 East-West Shrine Game.