Weber State (22-5, 16-2 Big Sky) led 37-29 at halftime but the Lumberjacks used a 20-5 run to begin the second half capped off by a Gabe Rogers 3-pointer to give Northern Arizona a 49-42 lead with 8:32 remaining in the game.
Trailing 69-67 with 11 seconds left, Berry hit a pair of free throws to send it to overtime and the Wildcats scored the first seven points in overtime to hold off Northern Arizona (11-18, 8-10).
Rogers finished with 25 points while hitting six 3-pointers to lead the Lumberjacks. DeWayne Russell had 17 points, seven assists and six rebounds. Max Jacobsen finished with 17 points.
Weber State shot 47.3 percent from the field and was 19 of 23 from the free-throw line.
Former Michigan point guard Spike Albrecht will play for Purdue as a graduate transfer next season.
Only six major-conference teams have failed to win an NCAA tournament game since the turn of the century. When will each program snap the streak?
Bruce Weber's Kansas State team earned a share of the Big 12 title three years ago, but a lot has changed since then and the pressure is on.