Joly scored 11 goals, assisted on eight others and posted a +11 in games during the month as the Eagles went 12-1-1 in December.
The 22-year-old scored at least one point in nine of his 11 games in December had had five multi-point games, including three goals and an assist in a 7-3 win at Rapid City on Dec. 6 and two goals and two assists in a 6-4 victory over the Rush on Dec. 29.
Under contract with San Antonio of the American Hockey League, Joly leads the ECHL with 24 goals and nine power-play goals is tied for second with 38 points and ranks second with a +21 rating.
Joly has recorded 78 points (47g-31) in 56 career ECHL games with Colorado and Greenville while adding 12 points (6g-6a) in 30 career AHL games with San Antonio and Hartford.
Prior to turning pro, Joly notched 236 points (128g-108a) in 219 career games with Rimouski and Cape Breton of the Quebec Major Junior Hockey League.
Also Nominated: Terrence Wallin (Adirondack), Stephen MacAulay (Florida), Jefferson Dahl (Idaho), Michael Neal (Indy), Matt Leitner (Manchester), Brodie Dupont (Norfolk), Joshua Winqust (Orlando), Josh MacDonald (Quad City), Michael Huntebrinker (Reading), Patrick Gaul (South Carolina), Erik Bradford (Toledo), Charlie Sampair (Tulsa), Ryan Walters (Utah), Hunter Fejes (Wheeling), Ralph Cuddemi (Wichita) and Chris Langkow (Worcester).