Temperatures are expected to plummet to minus-19 degrees Sunday night in Green Bay, Wis., hours after the 4:40 p.m. ET kickoff between the 49ers and Packers in an NFC wild-card matchup. Sunday's high will be 3 degrees, but due to winds 15-30 mph winds, the wind chills could approach minus-45. The Lambeau Field concession stands will do their part to keep fans warm, offering two free coffees and hot chocolates during the game. "With the forecast predicting very cold temperatures this Sunday, we're happy to offer our fans a way to warm up while attending the game," Packers president/CEO Mark Murphy said in a statement. Meanwhile, the National Weather Service has issued a wind-chill warning for the Green Bay area for Sunday at 6 p.m. to noon Tuesday.