I know it's a bit silly, but I am sad about the demise of the weather site my-cast.com. It had been my go to website when I wanted to know what today or tomorrow's weather would be. I've been using it for something like 10 years. It has a nice simple UI. At the top of the page was a static weather map, with a play button to show you an animated version of the past hour's radar images. Below that it had a summary of the weather for the next five days. It also had a button to switch to its predictions of the weather for the next couple of hours. It also used a cookie, so the next time you visited the site it would remember the town you searched for.
That was it for the UI. No ads, silly articles, extraneous details - just the information you wanted for a quick summary of the weather. Unlike weather.gov, it worked in both the US and Europe (I didn't try other continents).
I used the website last night, but I went there this morning, the website was replaced with a photo of a sunset on a lake and the message:
Effective July 15, 2015, the my-cast.com website has been shut down. Thank you for being a patron of our site for the last 15+ years. The My-Cast Team
I'll probably switch to the Weather Underground, but their UI is not as simple as my-cast was.