Abstract:The anomaly of annual mean surface air temperature over China in 2015 is 0.9℃, warmer than normal years making the year the warmest since 1961. The annual mean temperature in South China broke the historical record while the regions of Northeast, Northwest and North China has experienced the second warmest year since 1961. The warmer air temperature was not only found in annual mean, but also in all the four seasons. The annual mean precipitation in 2015 in China was 648.8 mm, 3% more than normal. More anomalies of precipitation were observed in most parts of the middle and lower reaches of Yangtze River, Guangxi and Xinjiang while less precipitation were seen in the western part of Southwest, Hainan and Liaoning. Seasonal precipitation is less in winter and summer, near normal in spring, but obviously above normal in autumn. There were too many torrential rain processes over the southern part of China, causing the South flooding and the North drought in summer. Urban waterlogging was very heavy in some cities, like Shanghai and Nanjing. However, North China, the eastern part of Northwest, and Liaoning suffered from serious and successive droughts through summer and autumn. In November severe precipitation appeared in South of China. Xinjiang had extremely hot wave in the mid summer, while the middle and lower reaches of Yangtze River Basin experienced cooler summer continuously for two years due to more rainfall. Landing typhoons were less but with more powerful strength. For instance, the landing Typhoon of Mujigae caused the severe disasters. There were eleven large scale and persistent haze events over China in 2015. The frequent fog haze events hit the central and eastern China from November to December, and the most serious event occurred in Huanghuai and North China from 27 November to 1 December in 2015.