If you haven’t heard of it, Forecast Advisor rates the accuracy of many weather services forecasts over the past month and year. In my case, Weather Underground (WU) is almost always the best. In my search for weather apps, I’ve limited it to those that use WU.
Official WU Apps
Weather Underground - Was my default weather app for years until I discovered Hello Weather (see next section).
Apps With WU as a Data Source
Hello Weather - Hello Weather has become my favorite weather app as the interface is data dense but still very clean. If you subscribe to the Fan Club, you get the option to use WU for the forecast and Dark Sky for rain. This is a very unique (and useful) combination.2
The only other two apps that I’ve found that use WU data are Clear Day and Weather Mate Pro, but I haven’t tried either as their interfaces look awful from the screenshots. If you know of any others, I’d love to hear about them.
CARROT Weather has released a huge update that includes an option to use WU + Dark Sky (you must have the Ultrapremium subscription to access this option). The widget isn’t quite as good as the one from Hello Weather, but I do really like the customization options for Watch complications and the widget.