is a great little App available for your Android device.
When you have this installed on your Android device, you will need to go in preferences, and you will need to set the XML file url. In there you simply add :-
OK it, then set the refresh settings to suit yourself.
Weather Personal Widget
The url settings for this one is :-
Ipad/Iphone apps ?
I have heard of one called Sol Tiempo, but never used it.