So I have a Gen-2 Rachio and it talks to a PWS in my back yard (I have a cron job that takes the data my PWS sends to Weather Underground and uploads it to PWSWeather.com). There is a 69% chance of rain today in the forecast, yet this morning at 4am, my system started it's flex watering for a duration of 371 min.
I am curious about the following:
1) Where does it get it's forecast data?
2) What has to be in the forecast to trigger the Rachio not to water?