- 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
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.
One player who persisted with short sleeves was 49ers quarterback Colin Kaepernick, who masterminded his team's 23-20 victory.