gweather [ --activate-goad-server [=GOAD_ID] ]
gweather displays the current temperature and weather conditions in numeric and iconified form inside the applet.
To add this applet to a Panel, right-click on the Panel and choose Applets->Utility->GNOME Weather
GOAD_ID is usually the applet name [gweather]
This manual page was written by Christian Marillat <marillat@debian.org> for the Debian GNU/Linux system (but may be used by others).