The usual effect of El Nino on Texas rainfall is to increase the chance of above average rainfall during winter and spring (up until about May), and then have little or no effect through summer and much of the fall, and then to increase it again as winter approaches. So your above-average rainfall could be due to the weak El Nino conditions we have had over the last few months. But since El Nino's influence on Texas rainfall is minimal after about May, I would not expect a continuation of your high rainfall going into June. If it does continue, it would be due to factors other than the El Nino. Then, if this El Nino is still going on next November or so (and current model forecasts indicate that it will), you may see a wet winter in 2015-16.