I have same issue. Data is recorded the day is raining and reset to zero the next day. I tried couple different weather stations around me and same thing happens. Support staff is blaming weather station and recommended using Weather Network and said they will try to fix the problem and they will get back with me. Did not happened, problem still there. Problem with weather network is that it does not show accurate precipitation for my area. My question is, when rain data is recorded for that day, why it is not locked? Can someone explain what this mean -Weather Intelligence™ Plus pinpoints weather within a 36 foot radius, then adjusts schedules accordingly.