I’ve used the California Irrigation Management Information System to get ETo prior to Rachio (hooray, no more manual daily ET checks!). Anyway, its weather station network would be of great value to those in farming communities throughout California. It would certainly provide a closer station for me.
CIMIS has a nice API but I don’t know if it is usable or even allowable for Rachio to use.
That said… it feels like a burden is lifted not having to check ET now. The crop ET seems right when checking against ETo. Nice job, Rachio.