Hansen also gave Idaho State (9-13, 6-7 Big Sky) a 75-74 lead on a 3-pointer with 2:12 left in overtime. Hansen was 8 of 16 from the field and made all four of his 3-point attempts and all seven of his free throws.
Joel Bolomboy made a free throw to pull Weber State (14-7, 11-2) even at 75-75, but Davion Berry missed a 3-point attempt to tie the game in the final seconds.
Tomas Sanchez had 12 points and Jeffrey Solarin added 10 for the Bengals who moved into a five-way tie for fifth place in the Big Sky.
Berry had 20 points and Jeremy Senglin added 18 for Weber State which remains two games ahead of Northern Colorado (9-4) for the conference lead.