I don't have a suggestion for the addon but there is a free weather program called Weathermate that is mostly accessable. I think it is quite feature rich considering that it is a free program. If you can't find it, let me know and I'll provice a dropbox link.
earlier, Ron Canazzi, wrote:
The new and exciting Weather Add On is still not working--now for about 48 hours. Does anyone have any further information about this? Who can I contact to advise. Yahoo must have changed something.
They ask me if I'm Happy, I say "yes."
They ask me "How happy are you?"
I say: "I'm as happy as a stowaway chimpanzee on a banana boat!"