@mclancy, did these weather reports come from station PWS_TPA33629 as noted on 10/22, 10/19 & 10/16?
The Iro will perform a weather check roughly 1 hour before each watering schedule if you have the weather intelligence feature enabled on a Fixed Schedule, and automatically if you're using a Flex Schedule.
Since the weather station is stuck reporting .59 inches of rain, it's either reporting bad data and needs to be reset/calibrated. Alternatively, it could be affected by this known defect.
Could we try changing your preferred weather station to another PWS or NWS and see if the problem continues? If it stops, then we can report the bad weather station to our weather service for review.
Hope this helps!