Abstract:The main characteristics of the general atmospheric circulation in July 2022 are that the polar vortex in the Northern Hemisphere was unipolar and slightly stronger than normal, the circulation in the mid-high latitude had a 4-wave pattern, and the western Pacific subtropical high was located more northern and western than normal. In July, the national average precipitation was 96.6 mm, 21% lower than normal, ranking the second lowest in the same period since 1961. The national average temperature was 23.2℃, 1.0℃ higher than normal, ranking the second highest in the same period in history since 1961. There were 6 regional heavy rain events in the month. The 1-7 July heavy precipitation process, which was triggered by typhoon landing as well as the interaction of the weakened low-pressure circulation and the westerly belt system, affected most of the central and eastern parts of China, and then the remaining 5 heavy precipitation events mainly affected the eastern part of the Northwest China, North China, Huanghuai Region and Northeast China. There were 3 typhoons born in July in total, which was less than normal. In July, there were two high-temperature weather processes, showing the characteristics of significant extreme, wide influence and long duration. Some parts of Sichuan Basin, Jiangnan Region, the eastern part of Northwest China, and Xinjiang experienced high-temperature weather above 40℃ with daily maximum temperature at many sites exceeding the historical extreme value for the same period.