NFL: Temperatures plummet in Green Bay as San Francisco 49ers beat Packers
January 6, 2014 -- Updated 1324 GMT (2124 HKT)
Fans wrap up warm as the cold bites during Sunday's NFL game between the Green Bay Packers and the San Francisco 49ers at Lambeau Field in Wisconsin. The temperature was measured at four degrees Celsius, but with wind chill it felt like minus 14.
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- The San Francisco 49ers beat the Green Bay Packers in freezing conditions
- Temperatures at Lambeau Field in Green Bay measured four degrees Fahrenheit
- Wind chill made conditions feel like minus 14
- The coldest match in NFL history took place at Lambeau Field in 1967
(CNN) -- American football players and fans alike braved bone-chilling conditions in Green Bay Sunday during one of the coldest games in National Football League (NFL) history.
The temperature at the Green Bay Packers' Lambeau Field in Wisconsin was measured at four degrees Fahrenheit, with wind chill causing the mercury to dip as low as minus 14 during the visit of the San Francisco 49ers.
An arctic front pushing through the Midwest, which has become known as a "polar vortex," was the reason for the frigid conditions, with players donning long sleeves and balaclavas beneath their helmets in a bid to keep warm during the seventh coldest game the league has ever seen.
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One player who persisted with short sleeves was 49ers quarterback Colin Kaepernick, who masterminded his team's 23-20 victory.
Jim Harbaugh, coach of the San Francisco 49ers, was so concerned by the cold that he had asked Kaepernick, a Wisconsin native and childhood Packers fan, three times to wear more weather appropriate gear.
"I'm a little hardheaded at times," Kaepernick, who also played without gloves, told reporters. "I played in cold-weather games before. I feel it's more mental than anything."
Lambeau Field is something of an ice fortress when it comes to the NFL's chilliest contests.
The Packers' 1967 meeting with the Dallas Cowboys, dubbed the "Ice Bowl" was played despite the temperature dropping as low as minus 14 -- with the wind making it feel like minus 48 -- securing its title as the coldest game in NFL history.
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