Absolutely, you don't want to water when it's raining!
This app won't have it tied in directly but like it says in the description and in the app itself. You can select up to 3 switches to override the schedule. Highly recommend using bangali's WATO app to make use of any attribute to turn on/off the override switches. ie. Rain and/or wind attributes.
I only have the single valve version of the Orbits to test with. Anything else you will just have to try and see. 
