Android : Getting value from XML

This is a small part of XML.

wind_gust_mph>3.0/wind_gust_mph>

wind_kph>1.6/wind_kph>

wind_gust_kph>4.8/wind_gust_kph>

I retrieved it from http://api.wunderground.com/api/fbfd68ef77a4a2cd/conditions/q/NewZealand/Auckland.xml

The below is my code:

 public MyWeather parseWeather(Document srcWunderGroundDoc){

    MyWeather myWeather = new MyWeather();
    Node windGust = srcWunderGroundDoc.getElementsByTagName("wind_gust_mph").item(0);
    myWeather.gust = windGust.getAttributes().getNamedItem("wind_gust_mph").getNodeValue().toString();

}

When I tried to run my app and it crashed. Can someone show me how to get three tags above?