Right, but Dark Sky had that issue too. When precipitation has hyperlocal variation, you're always going to have that problem.

The Doppler radar that "live" precipitation comes from takes 4-6 min to complete a scan, and then obviously it takes a few minutes for that all to be ingested, update models, and push to devices.

The "live" weather from Apple (and when it was Dark Sky) has always been a prediction from about 10 min ago. And if it's raining where you are but dry six blocks to the north (as happens all the time), it's understandable why it gets it wrong.