Stevens hit 5 of 6 3-pointers and had eight assists.
Kendle Moore added 17 points and Adam Thistlewood had 16 points for Colorado State (12-7, 3-3 Mountain West Conference), and each made four 3-pointers apiece. David Roddy added 12 points.
Colorado State also collected season highs with 27 assists and 56 first-half points.
Zane Martin had 17 points for the Lobos (15-4, 4-2).
Colorado State plays Air Force on the road on Saturday. New Mexico takes on UNLV on the road on Saturday.
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