I live in the Netherlands. The local weather apps tell me when it's going to rain with nearly minute precision, along with cloud maps with scrollable time, graphs of how heavy the rain will be at what time, etc. It's pure nonsense to claim this is a technical limitation when other apps do it with ease. No one is expecting it to be right 100% of the time, but Apple Weather is wrong about rain most of the time, even on a crude scale of say, a city.