Please recognize that sometimes you still need the water to come on regardless if it rained - in my case, in a greenhouse where there is no weather! I think there is an option to turn the weather and sensor off for a particular zone - regardless, I need that option.
You can create a schedule for just your greenhouse and disable the weather intelligence features! Directions on how to do that can be found here.
I turned weather intelligence off as you suggested. (I had it on for the Freeze Skip feature.)