This is still a problem for me.
I have my timers set to run every 2 days. They do water every 2 days, but on the day that it is not scheduled to water, and does not on the day that it is scheduled to water. This makes the the weather feature and enabling a rain delay impossible. I’ve turned the schedule on/off, updated the schedule, nothing works!
Weather still does not show up on the home screen for 2 out of 3 timers.