I had 3-4 inches of rain yesterday. Looks like my system would have happily watered this morning except for the fact that I had manually entered a rain delay ... Yikes!! If I understand correctly I could create an IFTT recipe to look at past rainfall(actually not sure I can do this), but .. Wow.. Shouldn't looking at rainfall over the last x hours be part of the standard functionality of the device (or am I missing something?).
Mine checks about 1 hour before start time.
Does it check yesterday's precipitation?
Yes, weather intelligence had issues yesterday from about 11am until about 11pm, apologize, no reported failures so had to track down. Problem is corrected and should be good to go.