There is no current way to obtain this information. One hour before the schedule runs we look up observed and predicted precipitation data using weather intelligence.
With our 2.0 software being released Monday, you can choose a preferred weather station (National or PWS). This will allow you to look up observed precipitation levels from your preferred weather station. At some point, I would like to expose all of that observed weather data (we currently store it for ever device) in our mobile and web applications.