The performances of medium range forecasts from the models of T639, ECMWF and Japan during June-August 2013 are verified and compared. The results show that ECMWF have best performance in predicting western Pacific subtropical high (WPSH). The three models all have good performances in predicting the anomaly high temperature in central and eastern part of China. As far as duration, range and turning time of high temperature weather are concerned, ECMWF plays better than the other two models. In addition, ECMWF has better performance in the prediction of the track and the landing time of typhoon Suli than T639 and JP, however the forecasting intensity of ECMWF is worse than that of the observation.