After Prep School, Weisenbaugh attended and played college football at the University of Pittsburgh as a fullback.
In 1932, the Pittsburgh Panthers went undefeated in the regular season, then lost to the USC Trojans in the 1933 Rose Bowl.
Weisenbaugh graduated from the University of Pittsburgh School of Dental Medicine in 1938 and established his practice in Tarentum.
During World War II, Weisenbaugh served as a captain and dental officer in the 455th Anti-Aircraft Artillery Battalion in Europe.
He later departed the unit and eventually became a major in the Army Medical Corps.