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Ryan Wilson, CBSSports.com

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.

"A Wind Chill Warning means that very cold air and winds will generate dangerous conditions," the NWS said in a statement Saturday. "This can result in frostbite and could lead to hypothermia or death if precautions are not taken. Do not venture outdoors without proper protective clothing. If you must go outside, wear multiple layers of loose fitting clothing. Be sure to wear a hat. Mittens provide more protection to the hands than gloves."

In January 2008, the Packers hosted the Giants in the NFC Championship Game and the temperature at kickoff was minus-1 with a wind chill of minus-23. The Giants won in overtime before defeating the Patriots in Super Bowl XLII.

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