What is the lowest temperature in Shanghai?

As of March 20 19, the historical extreme minimum temperature in Shanghai was-12. 1℃, which appeared at 65438+ 10 in the 19th year of Guangxu.

Shanghai belongs to the northern subtropical monsoon climate, with the same period of rain and heat, abundant sunshine and rainfall. Shanghai has a mild and humid climate. After the founding of the People's Republic of China, the extreme maximum temperature was 39.9℃ (2065438+August 6th and 8th, 2003) and the extreme minimum temperature was-10.1℃ (197765438+1October 30th). Spring and autumn are shorter and winter and summer are longer. The annual average temperature is 17. 1℃.

The frost-free period of the whole year is about 230 days, and the average annual rainfall is 1 159.2mm, but 60% of the rainfall in a year is concentrated in the flood season from May to September, and there are three rains in the flood season: the large-scale continuous rain and snow at the turn of winter and spring (also called the winter plum rainy season from the end of February to the beginning of March) and the plum rain (generally from mid-June to July) The high temperature in Shanghai usually appears from June to September.

Extended data:

Climatic characteristics of Shanghai:

The subtropical monsoon climate is very suitable for human habitation, mainly located at the edge of the Pacific Ocean, with high temperature and rainy summer and mild and little rain in winter.

The subtropical monsoon climate zone is rich in heat resources.

The annual average temperature is between 13℃ and 20℃, and the accumulated temperature ≥ 10℃ is between 4000℃ and 6500℃. The monthly average temperature in 65438+ 10 is above 0℃, 0℃~2℃ in the north of the Yangtze River, 2℃~ 10℃ in the south of the Yangtze River and10℃ in Nanling area.

Due to the low terrain and weak barrier function, Huaiyang Mountain is often affected by cold air from the south in winter, especially Jianghan Plain and Dongting Lake Plain, which are connected to Nanyang Basin in the north and Gui Xiang Corridor in Nantong. Winter becomes a channel for cold air to move southward, where the 65438+ 10 monthly isotherm protrudes southward in a tongue shape.

The absolute minimum temperature in the north of the Yangtze River can reach below-10℃, and the minimum value of-18. 1℃ has appeared in Hankou (197765438+1October 30th), and it is mostly between -7℃ and-0 in the south of the Yangtze River. Whenever strong cold air goes south, the temperature often drops above 10℃. In Shanghai, there was a record that the temperature dropped by 25.2℃ in two days.

Therefore, although this area is subtropical, the winter temperature is lower than other parts of the world at the same latitude. Due to the low temperature in winter, the subtropical latitude of China is south, and its northern boundary is 4~5 latitudes south than the theoretical boundary.

Compared with the Mediterranean region, it is 10~ 1 1 latitude to the south. However, subtropical areas in China, especially central China, are generally hot in summer, with the average temperature in July around 28℃ and some areas exceeding 29℃. High temperature weather above 35℃ often occurs from May to September.

July-August is controlled by subtropical high, with many sunny days and long sunshine hours. The frequency of high temperature is the highest, and the absolute high temperature often exceeds 40℃. Jinhua, Lishui, Zhejiang and Anhua, Hunan all have high temperature meteorological records above 4 1℃. The average temperature in April and1October is 16℃~2 1℃, and the temperature in autumn is slightly higher than that in spring.

Generally speaking, the middle and lower reaches of the Yangtze River are warm in spring and cool in autumn, hot in summer and cold in winter, with four distinct seasons. Generally, winter is 1~4 months long, about 4 months north of the Yangtze River, and less than 1 month in Nanling area; Summer lasts for more than four months, generally ending from mid-late May to late September, and arriving at the beginning of 10 at the latest in the south. The length of spring and autumn in most areas is 2 months each, and it can reach 3 months in the south.

The average annual precipitation in subtropical monsoon climate zone is generally 800mm~ 1500mm, which is twice as much as that in North China and richer than that in Southwest China. The distribution of precipitation decreases from southeast to northwest. The annual precipitation in hilly areas of Zhejiang Province is 1200mm~2000mm, that in hilly areas of Nanling and Jiangnan is about 1500mm, and that in plain areas of the middle and lower reaches of the Yangtze River is1000 mm ~1200 mm..

The influence of topography on precipitation is also remarkable. Generally, there are more mountains than flat land, and there are more windward slopes than leeward slopes. For example, Tunxi in Anhui is very close to Huangshan, and the precipitation in Huangshan is 700mm more than that in Tunxi (Tunxi 1507.8mm, Huangshan is 2263.9mm). The annual precipitation of Luoxiao Mountain and Xuefeng Mountain can exceed 180cm.

In the seasonal distribution of precipitation, summer rain is the most, followed by spring rain, autumn rain is worse, and winter rain is the least, but winter rainfall can also account for more than 10% of the annual precipitation. The middle and lower reaches of the Yangtze River are areas with high proportion of winter rain and abundant spring rain in China.

Baidu Encyclopedia-Shanghai