Big chill could freeze 49ers, Packers in wild card
Green Bay playoff game could be coldest in NFL history
Packers' special teams meltdown helps 49ers pull off playoff stunner
Purdy: Extreme cold weather football is survival of the craziest – The Mercury News
Temperatures plummet in Green Bay as San Francisco 49ers beat Packers
Packers fans shoveling snowy Lambeau Field through the years
Packers, 49ers prepare for near-record, subzero temperatures
NFL Divisional Saturday Takeaways: 49ers Carry Jimmy Garoppolo in Huge Upset, News, Scores, Highlights, Stats, and Rumors