You can add weather to your web site. This allows your visitors to look up their local weather conditions or the conditions anywhere in the world. This is done by signing up with the appropriate service and adding some simple HTML code to your site.
The Weather Channel offers a large variety of services, including the ability to add different kinds of weather lookup on your web site.
One service that you can include is called AccuWeather. It’s a nice small interface to a nice service.