In my previous comment, I talked about plasma-widget-weather, it is currently working for me.
But kweather is still unusable, it appears in the archive, it has KDE4 version, currently 4.2.1-0ubuntu1 in jaunty, how it has KDE4 version if it is not a KDE4 program? If it is a KDE4 program, it cannot be used, so there is a bug. And if it is not usable in KDE4, it should be removed from the archive in jaunty or future versions.
In my previous comment, I talked about plasma- widget- weather, it is currently working for me.
But kweather is still unusable, it appears in the archive, it has KDE4 version, currently 4.2.1-0ubuntu1 in jaunty, how it has KDE4 version if it is not a KDE4 program? If it is a KDE4 program, it cannot be used, so there is a bug. And if it is not usable in KDE4, it should be removed from the archive in jaunty or future versions.