The Weather Report tool downloads weather information from the U.S National Weather Service (NWS) servers, including the Interactive Weather Information Network (IWIN) and other weather services. You can use Weather Report to display current weather information and weather forecasts on your computer taskbar / Panel (fig # 1):
Fig # 1
Now there is a new tool called Weather wallpaper. It is a program which connects to NOAA each hour to get the current weather at the specified location and creates and sets a wallpaper with the data retrieved.
First you have to search for the ICAO Location Indicator for your city and edit the configuration file located at ~/.weather-wallpaper/conf accordingly.
Download Linux Weather wallpaper