I like the idea of this but... It works fine on my iPhone and not at all on my iPad. As well it reverts back to Fahrenheit every time. The world officially uses Celsius, except for Myanmar, Liberia and USA. It should stay where its set but if not, at least make it revert to what the majority of the planet uses.
DISOttawa about Weather Dial - A Simpler, More Beautiful Weather App, v1.0