Weigman grew up in Cypress, Texas, and attended Bridgeland High School, where he played baseball and football.[1] He became Bridgeland's starting quarterback during his sophomore season.[2] Weigman passed for 3,808 yards and 42 touchdowns against 11 interceptions in his junior season.[3] As a senior, Weigman passed for 2,588 yards and 29 touchdowns with six interceptions while also rushing for 754 yards and nine touchdowns. At the end of the season he was named the Offensive Player of the Year by the Houston Touchdown Club and the National High School Quarterback Of The Year by the National Quarterback Club[4]
Weigman joined the Texas A&M Aggies as an early enrollee in January 2022.[8] He also withdrew his name from the 2022 Major League Baseball draft.[9] Weigman ultimately decided against playing baseball in order to participate in spring practices.[10] Weigman entered his true freshman season as Texas A&M's third-string quarterback with the intention of redshirting the year.[11][12] Weigman made his first collegiate start in week 9 against no. 15 Ole Miss, finishing 28-of-44 for 338 yards and four touchdowns in the 28–31 loss.[13] He started Texas A&M's final four games and finished the season with 896 passing yards and eight touchdown passes.[14]
In 2023, Weigman was named the Aggies' starting quarterback entering his sophomore season after competing with Max Johnson during preseason training camp.[15] Weigman started the first four games until suffering a season-ending foot injury.[16]
On December 3, 2024, Weigman announced that he would enter the transfer portal.[17]
Houston
On December 11, 2024, Weigman announced that he would transfer to Houston.[18]