What you describe, contrails seen preceding (before) rain, is common. Cirrus clouds in general often precede rain, so contrail/cirrus before rain is nothing unusual.Well in my case the trails are already here before the rain does. Then we don't get no rain. This has been going on for a year. Well I was trying to upload some pics and its not working. i'll have to get some help and do this later.
The weather records show that Corpus Christi does actually receive rainfall. Just under 3 inches for July.
You get rain.