dunno but I see the same thing all the time. Seems one or the other is not updating exactly the same time. Usually for me they are the same (I have a saved one for the city I live in) and 90% of the time thats my location too. I have seen my current location show an area though instead. Like the city is High Point, but sometimes I see location stating Oak Hollow. That is an area in High Point. Next update it changes back to High Point. Also have seen options in other weather apps to choose a source. So there could be like 2 or 3sources in High Point for example that it pulls from. Sometimes (in those other apps) I have selected different ones and got different temps. I suspect that's what's going on with Yahoo/Apple weather.