CHICAGO - Neither the brutal cold nor one of the league's worst defenses could stop Josh McCown and the Chicago Bears.

McCown threw for a career-high four touchdowns, and the Bears scored on their first eight possessions to grab a share of the NFC North lead with a 45-28 victory over the Dallas Cowboys last night.

The Bears (7-6) retired Hall of Famer Mike Ditka's number at halftime and pulled even with Detroit in the division race on a night when the wind-chill factor was below zero. Dallas (7-6) fell a game behind the Eagles in the NFC East.

The conditions didn't stop McCown from throwing for 348 yards or keep the Bears from running away with a lopsided victory after consecutive losses.

Alshon Jeffery's leaping catch in the corner of the end zone near the end of the first half gave the Bears a 24-14 lead, and they continued to pour it on.

Dallas' Tony Romo threw for three touchdowns but completed just 11 of 20 passes for 104 yards.

The Cowboys lost linebacker Sean Lee with a neck injury.