Info. from weather.com

I was wondering how you get your information from weather.com. I was looking at some of the files and noticed that the .wtp files are just html files where different phrases are used to insert the weather information. Then I can change the format of how the weather information is displayed on the page. But I can’t figure out how you are pulling the different parts of information from weather.com. If you could tell me how you are doing that, I would greatly appreciate it. Thanks.