Sune Vuorela has added support for the Debian Weather service in the KDE Plasma Dataengine (here is the change).

Starting from the next KDE release, you'll be able to use the nice applet you can see in the above figure to monitor the amount of not installable packages in a Debian/suite architecture of your choice ... and avoid attempting upgrades during heavy rain!, such as the recent Perl 5.12 transition in Debian unstable.