Huff finished with 28 points on 8 of 18 shooting from the field and 11 of 12 from the line.
North Dakota (12-14, 9-7 Big Sky) shot a crisp 48.9 percent from the field and 9 of 19 from long range to stay in the thick of battle for third place in conference.
Quinton Upshur came off the bench to score 18 points to lead Northern Arizona (11-16, 8-8), with Kris Yanku adding another 15 points.
North Dakota beat Northern Arizona at home, 84-68. Both teams lost games Thursday, entering Saturday's game in a five-team tie for third place in the Big Sky Conference at 8-7.