Green Bay's Lambeau Field is called the Frozen Tundra for a reason, and on Sunday, it will certainly earn that title.

Late Sunday afternoon when the Green Bay Packers host the San Francisco 49ers at Lambeau Field, the high is two degrees, while the low is minus-20 degrees. The biggest factor may be the wind, as a 14 MPH Northwest wind will make it feel very cold.

Back in 2008 in the NFC Championship Game, it was minus-one when the New York Giants beat Green Bay at Lambeau Field.

The coldest game on record was in 1967 for the "Ice Bowl" at Lambeau Field between the Packers and Dallas Cowboys. The temperature was minus-13, and the wind chill made it feel like minus-48. The Packers beat the Cowboys, 21-17 in that game.

For Sunday's game, the Packers had trouble selling tickets, but as of today (Friday), the game was finally sold out. The Packers have had 319 consecutive sellouts .

Game time is set for 3:40 EST at Lambeau Field for the Packers and 49ers.