GNOME Shell Weather Extension by Neroth is a fork of the original GNOME Shell Weather Extension which offers multiple locations, no WOEID required, a symmetrical layout and a settings panel. Currently, the weather report, including forecasts for today and tomorrow, is fetched from Yahoo! Weather. Here is how to install it:
Ubuntu, Mint, Debian and derivatives
sudo add-apt-repository ppa:gnome-shell-extensionssudo apt-get updatesudo apt-get install gnome-shell-extension-weather
su -yum localinstall --nogpgcheck \http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm \http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-stable.noarch.rpmyum install gnome-shell-extension-weather
It is available in AUR
After the installation, restart GNOME Shell (Alt+F2, r, Enter) and enable the extension through gnome-tweak-tool.
Here is how the extension and its settings look like.