Weather Underground  is a site just about everyone has visited at one point or another. Personally, I’ve been using the site for years. WU is one of the oldest web sites on the internet, and in fact is so old that that it’s original 1992 (yes, 1992) version was accessed via the telnet protocol. That original version is still accessible today and you can access it at the telnet server address rainmaker.wunderground.com.
See video below for how to access Weather Underground using telnet to see what it’s like. It’s very simple and very basic, but it still works great.