According to the NOAA Climate Prediction Center we transitioned out of the El Nino influence in late May. Although many forecasts still call for a neutral ENSO effect for the late summer and fall, NOAA says some data is leaning toward the development of a La NIna influence.
"The majority of models predict ENSO-neutral conditions (between -0.5oC to +0.5oC in the Niño-3.4 region) through early 2011. However, over the last several months, a growing number of models, including the NCEP Climate Forecast System (CFS), indicate the onset of La Niña conditions during June-August 2010. There is an increasing confidence in these colder model forecasts, which is supported by recent observations that show cooling trends in the Pacific Ocean and signs of coupling with the atmospheric circulation. Therefore, conditions are favorable for a transition to La Niña conditions during June-August 2010."