Looks like CWOP is supported, but you need to link it to NOAA in order for Rachio to see it:
See steps 8 through 11 here (link)
You have several options with API
0) Do nothing, use CWOP as outlined above.
- Check your API usage here (link), Weather Underground seems to track usage differently when data is accessed from one station only, you could be well under your 500 / day limit.
- Just create a second free API key using a different email.
- Check if Vera Z-Wave supports getting data from PWSweather instead of weather underground (in which case you can simply switch where API key is used).
Check here (link) for a better instructions on how to setup wufyi which has the script running already. You can start using the website without needing to host or reconfigure the script yourself.
Cheers,
Gene