Ok. Now I'm really confused! I had written an email as directed on their site, asking for a widget, and got back a reply:
"Hello. If you are trying to implement Max Web - Weather Widgets, you need to license the product. Let me know if you'd like to be put in touch with a sales representative for a quote. Thanks, Billy Warner - Digital Content Support - The Weather Company, an IBM Business -TWCDigitalSupport@us.ibm.com"
That was not a surprise, since I figured a license would cost $$$ (which I'm not interested in buying)...but what is surprising is that the widget is working again! Perhaps because my account at WU is still paid up for another year?
In any case it will only last until the end of this year, after which (according to messages received), Adobe Flash will no longer be supported. I know it probably will still work for a while, but no support means no security, so I'll have to hunt for another widget then.
Meantime, I'm just glad it works!