Snow and ice falling from Cowboys Stadium has injured several people ahead of this year's Superbowl.
Snow continues to fall after a massive winter storm grounded flights throughout the nation.
Over 100,000 football fans are expected to converge on Dallas for the face-off between the Pittsburgh Steelers and Green Bay Packers.
Fans had to scramble for alternate flights after American Airlines and its regional carrier cancelled 630 flights to and from its Dallas hub on Friday because of another winter storm.
As well as the more than 100,000 who will cram into the space-age Cowboys Stadium to watch the game live, an estimated worldwide audience of more than 160 million are expected to watch the extravaganza unfold on television.
The Steelers, who have won the Super Bowl a record six times, including twice in the previous five seasons, won their divisional title then beat the New York Jets to claim the AFC championship.
"Fortunately for us, we have what you can't buy," Pittsburgh coach Mike Tomlin said. "(We have)...an unbelievable standard and expectation and all those great things."
The Packers, who have won a record 12 NFL titles, including three Super Bowls, earned their place the hard way. They secured one of the NFC wildcards after finishing second in their division, then won three sudden-death playoffs on the road.
"We're going to play as wide open as we need to. As smashmouth as you need to and situations will dictate that throughout the game. Its the last game of the year and its the opportunity to bring the Lombardi Trophy home and we're going to give it everything we've got," Green Bay Head Coach Mike McCarthy told reporters.
The Packers are slight favourites to win but few people are exactly sure what to expect. Both teams have outstanding quarterbacks, bruising defences and can pile on the points.