UILabels not retrieving plist data

class ViewController: UIViewController {

    @IBOutlet weak var currentTemperatureLabel: UILabel?
    @IBOutlet weak var currentHumidityLabel: UILabel?
    @IBOutlet weak var currentPrecipitationLabel: UILabel?

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        if let plistPath = NSBundle.mainBundle().pathForResource("CurrentWeather", ofType: "plist"),
            let weatherDictionary = NSDictionary(contentsOfFile: plistPath),
            let currentWeatherDictionary = weatherDictionary["currently"] as? [String: AnyObject] {

                let currentWeather = CurrentWeather(weatherDictionary: currentWeatherDictionary)

                currentTemperatureLabel?.text = "\(currentWeather.temperature)º"
                currentHumidityLabel?.text = "\(currentWeather.humidity)%"
                currentPrecipitationLabel?.text = "\(currentWeather.precipProbability)%"
        }

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }  
}

//And CurrentWeather.swift

import Foundation

struct CurrentWeather {

    let temperature: Int
    let humidity: Int
    let precipProbability: Int
    let summary: String

    init(weatherDictionary: [String: AnyObject ]) {
        temperature = weatherDictionary["temperature"] as! Int
        humidity = weatherDictionary["humidity"] as! Int
        precipProbability = weatherDictionary["precipProbability"] as! Int
        summary = weatherDictionary["summary"] as! String    
    }
}