How to extract JSON data from array inside of array in Swift 2.0

I am currently using Openweathermap.org to get weather forecast information. And here is the JSON objects I got from their API:

{  
   "city":{  },
   "cod":"200",
   "message":0.0029,
   "cnt":40,
   "list":[  
      {  
         "dt":1466532000,
         "main":{  
            "temp":296.52,
            "temp_min":294.864,
            "temp_max":296.52,
            "pressure":1004.95,
            "sea_level":1023.45,
            "grnd_level":1004.95,
            "humidity":58,
            "temp_kf":1.65
         },
         "weather":[  
            {  
               "id":803,
               "main":"Clouds",
               "description":"broken clouds",
               "icon":"04d"
            }
         ],
         "clouds":{  },
         "wind":{  },
         "sys":{  },
         "dt_txt":"2016-06-21 18:00:00"
      },
      {  
         "dt":1466542800,
         "main":{  },
         "weather":[  ],
         "clouds":{  },
         "wind":{  },
         "sys":{  },
         "dt_txt":"2016-06-21 21:00:00"
      },
      {  
         "dt":1466553600,
         "main":{  },
         "weather":[  ],
         "clouds":{  },
         "wind":{  },
         "sys":{  },
         "dt_txt":"2016-06-22 00:00:00"
      }]
}

As you can see from this sample, under list there are many objects and what I want is just the temp and the weather main and description. I created a Struct to sort and hold all of the JSON objects but it keeps giving me errors. How do I sort it in terms of the "dt" and how would I extract the data from the JSON. Thanks.

Here is my Struct:

import Foundation

struct FutureWeather {

 //future stuff
 var futureDt: NSDate //
 var futureMainWeather: String//
 var futureDescription: String//
 private var futureTemp: Double//
 var futureTempCelsius: Double {
    get {
        return futureTemp - 273.15
    }
 }
 var futureTempFahrenheit: Double {
    get {
        return (futureTemp - 273.15) * 1.8 + 32
    }
 }


init(futureWeatherData : [String:AnyObject]) {

    //first set of data
    let futureWeatherDictUno = futureWeatherData["list"]![0] as! [String: AnyObject]
    print(futureWeatherDictUno)

    let events = futureWeatherDictUno.sort({$0["dt"] <  $1["dt"]})

    futureDt = NSDate(timeIntervalSince1970: futureWeatherDictUno["dt"] as! NSTimeInterval)

    let mainDictOne = futureWeatherDictUno["main"] as! [String: AnyObject]
    futureTemp = mainDictOne["temp"] as! Double

    let weatherDictOne = futureWeatherDictUno["weather"]![0] as! [String: AnyObject]
    futureMainWeather = weatherDictOne["main"] as! String
    futureDescription = weatherDictOne["description"] as! String


    //the second set of data
    let futureWeatherDictDos = futureWeatherData["list"]![1] as! [String: AnyObject]
    futureDt = NSDate(timeIntervalSince1970: futureWeatherDictUno["dt"] as! NSTimeInterval)

    let mainDictTwo = futureWeatherDictDos["main"] as! [String: AnyObject]
    futureTemp = mainDictTwo["temp"] as! Double

    let weatherDictTwo = futureWeatherDictDos["weather"]![0] as! [String: AnyObject]
    futureMainWeather = weatherDictTwo["main"] as! String
    futureDescription = weatherDictTwo["description"] as! String


    }

}