Here is the NOAA Synopsis:
There is a greater than 90% chance that El Niño will continue through Northern Hemisphere fall 2015, and around an 85% chance it will last through the 2015-16 winter.
http://www.cpc.ncep.noaa.gov/products/analysis_monitoring/enso_advisory/ensodisc.html
and for laymen to understand...
http://www.weather.com/news/weather/video/strong-el-nino-what-does-it-mean