At  Leuven-Template & scripts   you find the download link for this script in the dropdown selection box.
The links to all other Leuven Scripts Demo's are located in the menu area.

Change the language here 

Leuven - WeatherUnderground - Coloured table v4 - Demo

This script only has a few settings you need to check and adapt. They are at the start of the startReports.php script.

This script will load the previous years data only once. The current year data will be loaded 2 times a day maximum. All data is saved in a "cache" folder on your server.

The download contains tranlation files for English, Dutch, French and German. Other languages can be added using standard language files.