According to Accuweather.com, the early weather forecast for Wrestlemania 29 on 4/7 at Metlife Stadium is calling for a high of 50 degrees with a low of 46. Showers are also possible during the evening hours. This of course is not quite official with the show being two weeks out, but it did confirm some initial fears early on about the cold temperatures.
Source: Accuweather.com