Lucky for me, it was simple to pick my own weather station since it’s been reporting to the Weather Underground for years. It seems to be working just fine. Looking in history, none of my grass has been watered since 11/25. So almost a month now. It has been raining a lot. My weather station looking at it reports just over 1/2" today. Looking on the Calendar shows zero watering days right now.
So first thing I would do is check out the weather station you picked out. How far away is it? Maybe it’s not raining there? Maybe that weather station has no rain monitoring, some don’t, they’re just basic Outside temp things. So I would check that station you picked out and make sure it’s actually reporting!!!