I do a fun hack today. I need outdoor temperature for my home boiler controller. As I do not have outdoor temp sensor ready yet i get actual temperature from Internet. If someone is interested the code is for download here https://github.com/Vladimirek/BR-PLC-code . The code call http://openweathermap.org/current and parse JSON response to structure. It can be extended to get weather forecast too, which may be more interested. Maybe latter. enjoy.