Neither team was sharp offensively in their last game. Weber State scored just 59 points in an 11-point road loss to Boise State. Portland State suffered a nine-point road defeat to Washington State scoring only 60 points.
I expect both Weber State and Portland State to score far more points than it did in those games as each is stepping down in class in this Big Sky Conference matchup. 
Weber State has a high-scoring guard , Isiah Brown. He's averaging 24.3 points. The Wildcats scored 88 and 85 points, respectively, in their first two games against lesser competition before running into Boise State. The Over has cashed in 12 of Weber State's last 16 games following a loss.
Portland State produced 88 points in its last game versus a weaker foe before it met Washington State. The Vikings have gone Over in eight of their last nine home contests.