Z Weather is now Zap Weather
Zap Weather is a free, open source Joomla component to display weather for any city or territory in the United States. Zap Weather utilizes data provided by the National Weather Service (NWS), a government agency who provides this weather data freely and without commercial links.
To download Zap Weather, you must create a free account at ZContent.net . From any page, click the "My Account / Create Account" menu option. From that page, either log into the site or create your free account. Once logged in, select the menu option "My ZApps" to download your free copy of Zap Weather.
For version 6 and earlier versions of Z Weather (for Joomla 1.5 and earlier), you can download them from here.