December always feels like a turning point for the Celtics because it reveals who they truly are against deeper and smarter competition. The schedule tightens, the matchups sharpen, and every game carries emotional weight for fans and bettors.
Boston steps into this month with expectations that match its talent. The team wants dominance. Supporters want proof. Bettors want edges built on real momentum. The mid-season provides all of that.
Below are the key Celtics games that fans track through the month. Each one offers its own storyline and implications. Together, they outline how Boston shapes its season and how viewers read the clues that matter most.