With a new head coach and several new players, Weber State struggled during Arceneaux's senior year (1999–2000). The Wildcats finished with a respectable 18-10 record, but did not return to the NCAA Tournament. In the first eight games of the season, Arceneaux averaged just 14 points per contest as opponents' defenses concentrated on him. As the season went on, he adjusted his playing style, and his statistics soared. He scored 27.0 points per game in conference play;, finished with a season average of 23.0 points per game (good for fifth in the nation), and added 7.4 rebounds per game. He finished his collegiate career in spectacular fashion, averaging 39.5 points and 14.5 rebounds in the last two games of his career (against Montana State and Eastern Washington).