I have 2 zone in full sun with hydrangea and Japanese maples. I need to increase the length of watering time on the automatic watering cycle and the frequency

I was wondering if there’s a relationship between the weather predicted on the app and the watering frequency. Here it shows daily temperature predicted at 90 degrees when in fact it’s 82 / 83 when 2 watering a week are sufficient. My app wants to water every day and unless I turn it off I don’t see a way to negotiate a more rational and way less costly rhythm. 

I touch the “done with zone” by mistake now I can’t figure out how to add the rest.