Thanks Emil! Once I calculate the Precipitation Rate, this is entered in the Flow Rate with custom nozzles, right? This might take a bit of effort, as with mixed nozzle angles of spray/GPM in a Zone it could require a bit of calculation, such as a 180 degree head would need half a Flow Rate value of a 360, etc. However, it appears doable.
We are a bit away from the watering season here in Rexburg, but getting set up. I'm really enthused about the Rachio, as my prior system did not have the ability to look at weather forecast data, but only ET.