Mike Garafolo of the Star Ledger has an interesting article looking at Eli Manning's play in cold weather and warmer weather.
"Barring a huge change in the forecast -- and in Coughlin's plan to likely play his starters -- Manning will be making his 22nd start in cold weather (50 degrees or below at kickoff). In his previous 21 starts in cold weather, Manning has compiled a passer rating of 63.5. In games when the temperature is 51 degrees or higher, Manning's passer rating is 77.6. In warm-weather games, Manning has averaged 1.03 interceptions per game. In cold weather, the number jumps to 1.38."
Although the season ends in a cold heap at Giants Stadium (their final home game of the year), they will open the playoffs at Tampa Bay. So there is some good news in that regard.
Eli Manning will have to improve his performance in cold weather if the Giants want to win in January though. If they advance, they would play in Dallas or Green Bay.