It would be nice to be able to determine how much rain a zone gets. Especially for zones close to buildings we have smaller Zones that does not get any or very little rain because of the building covering parts of the Zone. At the moment (from what I understand) it is not possible to have Rachio take this into account.
One could picture a zone that gets 100% rain to be 1 where only 50% of the Zone gets rain it would be 0.5, no rain 0.5
Obviously this only works where the Zone is small enough as one would assume that the rain that reaches the Zone is available to the plants