Given that this El Nino is just getting going, and typically the impact of El Nino on the midlatitude atmospheric circulation is pretty weak this time of year, I think it's doubtful that El Nino is the main culprit for the weird weather you describe. I couldn't say that it has had no effect, given that the tropical circulation anomalies associated with El Nino could have impacted the North Pacific/North America circulation in some way, but it would take a thorough analysis to make such a confident conclusion.