The Knicks were particularly effective from beyond the arc, where they connected on 18 of 33. Novak paced five players in double figures for New York.
Led by Carmelo Anthony, who finished with 17 points, the Knicks took a 38-21 first-quarter lead.
But the young Wizards answered the challenge. Reserve Bradley Beal scored all of his 12 points in the Wizards' 22-0 run that gave them a 56-53 halftime lead.
Novak hit consecutive 3s to put the Knicks up 95-88 with 6:28 left.
Jordan Crawford led the Wizards with 17 points.
Brian Windhorst breaks down possible destinations for free agent Joakim Noah including playing in his hometown of New York with longtime teammate Derrick Rose.
Brian Windhorst says the timing of Kevin Durant's decision in free agency will be the first, and biggest domino to fall. Windhorst also lists the teams in addition to the Warriors, Spurs and Thunder that will make a major push for Durant.
Brian Windhorst explains what leaving Chicago, his hometown, means to Derrick Rose and why it could be good for him to get a fresh start away from the scrutiny of Bulls fans.