Eric Greenwood scored two touchdowns in the first half and Deonte Jackson scored twice in the second half to push Idaho past Utah State 28-6 Saturday.
Idaho quarterback Nathan Enderle completed 20 passes on 31 attempts for 243 yards and three scores for the Vandals (5-6, 2-4 Western Athletic).
Derrvin Speight ran for 83 yards to lead the Aggies (4-7, 2-4).
USU quarterback Diondre Borel was only 14 of 35 for 103 yards, though several passes were dropped in the second half as rain turned to snow and covered the field in Romney Stadium.
Placekicker Peter Caldwell scored USU's only points on first-half field goals of 24 and 44 yards.
Idaho gained 355 yards of offense while USU was credited with 242 yards.