Weatherbug FTW, I have tried to use Weather eye, Had issues with it updating. Also when i started using a HTC theme, the Weatherbug icon seems to look better as well as update often.
Weather Eye...Great if you live in USA...Not so great here in the UK
WeatherBug...Fantastic, however a number of UK towns and cities are not on there for example Oban, West Coast of Scotland an major tourist destination...not on. When highlighted was given a number of links to get it sorted on my own
Weather Channel... Had everything sunrise/set, 10 day forecast etc etc however it took far to long loading up
My current weather app is Weather Plus 2.1 (MMMOOO) has a nice status bar thing, icon has temp, add lots of cities world wide. On fail so far is the status bar icon refuses to update after a few hours and then disappears. I have raised this with the support and they are investigating.