You only load module currentweather and not weatherforecast, so you won’t see any forecast.
{
module: "weatherforecast",
position: "top_right",
header: "Weather Forecast",
config: {
location: "New York",
locationID: "5128581", //ID from http://www.openweathermap.org/help/city_list.txt
appid: "YOUR_OPENWEATHER_API_KEY"
}
},