Need weather widget create from National Weather Service data

We need a weather widget created which we can customize for our clients. Here is an example of where data would be taken. This site also includes an xml feed which I assume is where info would be parsed from. There is a similar widget at the bottom right of this site. [login to view URL] Many similar widgets can be found in Joomla, but we are needing one in which has functionality on the back end where we can customize location, data displayed, size of widget, etc and create iframe codes for client.