There are many weather extensions in Joomla extensions directory but none like Weather for Jomsocial. Why?, Jomsocial Weather was specially designed to integrate flawless with Jomsocial templates. It installs as a Jomsocial plugin and can be published inside the main user content or wall, top sidebar or bottom sidebar of the template. Also a main feature is the usage of google weather API to retrieve weather, you just need to set your location in the backend i.e. London, and let the plugin do the rest.