Meteorological conditions in Changsha

Changsha City is located in the eastern and northern part of Hunan Province, downstream of Xiangjiang River, and on the western edge of Changliu Basin. It belongs to subtropical monsoon humid climate, characterized by mild climate, abundant precipitation, simultaneous rain and heat, and distinct four seasons. Changsha is long in summer and short in spring and autumn, with1127 days in summer, 17- 122 days in winter, 6 1-64 days in spring and 59-69 days in autumn.

The temperature changes greatly in spring, with more rain in early summer, long high temperature in summer and autumn and less cold in winter. From late March to mid-May, cold and warm air often crosses the south of the Yangtze River, resulting in continuous rainy and cold weather. Since the end of May, the temperature has increased obviously, and the rainfall has increased obviously. Changsha has entered the rainy season.

After the rainy season in August in midsummer, it is often very hot and rainy here, and the summer drought begins, and the extreme maximum temperature can reach 39-40℃. After the end of September, although it was still hot during the day, it turned cold at night and there was not much precipitation. 165438+ 10 is winter, but the severe cold period of Changsha with the average temperature below 0℃ is very short, and 1 is the coldest in June with the average temperature of about 5℃, so the general overwintering crops can overwinter safely.