Huainan City belongs to the south of Huaihe River, which is a transitional zone between warm temperate zone and subtropical zone. The annual average temperature is on the high side, with an average temperature of 16.6℃, which is higher than normal 1.0℃. Only February and 65438+February are 0.7℃ and 1.5℃ lower than normal, and the other months are higher than normal, with April being 2.8℃ higher than normal. The average temperature in winter is 3.5℃, which is 0. 1℃ lower than normal, which is a normal year. The number of high temperature days in the whole year is 28 days, which is more than normal 1 1 day. The extreme maximum temperature of the whole year is 38.9℃, which appears on July 30th. The annual extreme minimum temperature is -5.5℃, which appears at 65438+1October 23rd. The first frost appeared on165438+1October 6, and the final frost appeared on March 65438+March 3, with a frost-free period of 238 days. [4]

Precipitation The annual precipitation is 893.4 mm, slightly less than normal, and the seasonal precipitation is unevenly distributed. It entered Mei on June 22nd and rose by 2 1 on July 22nd, both of which were later than normal. The amount of plum rain was166.3mm. On February 22nd, 65438, the first snowfall was ushered in. The annual precipitation days are 107 days and the rainstorm days are 5 days.