is a free and open source weather widget application which displays weather situation in and around your area on your Ubuntu desktop.
sudo add-apt-repository ppa:apandada1/typhoon
sudo apt-get update
sudo apt-get install typhoon
To enable Typhoon to start at boot look for startup applications > autostart > add and type in the information as shown in the next screenshot :
After a reboot Typhoon should autostart once you log in .