Its not the one that I want to use. its ok, but the one on mint 13 mate has a radar feature that I like.
Okay : I believe the weather applet mate/gnome is one that works under xfapplets.
J.Jay P.S. not same (need internet) one of the links (in blue) in the 'Xfce weather applet goes to Weather channel where has radar (and more) that you can set up to be ready on web page (power of web cookies )