It was Lehtonen's first win at home since Nov. 4 against the Buffalo Sabres. Ben Bishop started the previous 17 home games, but he missed the game with facial swelling after he was hit with a puck on the bench in a 4-1 victory at the Arizona Coyotes on Thursday.
WATCH: [All Wild vs. Stars game highlights]
"A hockey rink is a hockey rink, and a game is a game," Lehtonen said. "I've been playing a lot on the road, and that's just the way it's been. I just tried to go out there and do the same thing I've been doing. It was good it worked tonight."
Jason Zucker scored for the Wild (28-19-5), who were coming off a 5-2 win against the Vegas Golden Knights on Friday.
"Turnovers, turnovers, turnovers, and it cost us," coach Bruce Boudreau said. "We were very careless in the first period and got away with it. The message between periods was that if we can manage the puck better and get it deep, then we're going to have success, it's gonna happen, but if we keep turning pucks over, bad things happen all the time."
Mattias Janmark, Stephen Johns, Benn and Seguin scored in the second, when Dallas outshot Minnesota 20-15.
Janmark gave the Stars a 1-0 lead at 8:58 on the power play when he deflected John Klingberg's shot from the point.