What are the lowest and highest temperatures in China?

Beijing: lowest:-9.1(since 50 years) 2005- 12-4.

Maximum value: 4 1.5 1997-7-23

Xi 'an: maximum: 42.9 June 2006-19.

Minimum: (unknown)

Kunming: Maximum: 3 1.5

Minimum: -5.4 (no time record)

Haikou: The annual average temperature is 23.9℃, the highest temperature is July, the monthly average temperature is 28.65438 0℃, the extreme maximum temperature is 40.5℃, the minimum temperature is 65438 0.3℃, and the extreme minimum temperature is 2.8℃.

Chongqing: The highest temperature is 44℃ and the lowest temperature is -3.8℃.

Dalian: The annual average temperature is 10.2℃, with a maximum of 35.3℃ and a minimum of -20. 1℃.

Guangzhou: The annual average temperature is 265,438+0.9℃, the highest temperature is 38.7℃, and the lowest temperature is 0℃.

Nanjing: The annual average temperature is 15.4℃, the highest temperature in history is 43℃, and the lowest temperature is-14℃.

Ningbo: the annual average temperature 16.3℃, the extreme maximum temperature 39.4℃ and the extreme minimum temperature-10℃.

Qingdao: extreme maximum temperature 35.4℃, extreme minimum temperature-16℃

Shanghai: the extreme maximum temperature is 40.2℃, and the extreme minimum temperature is-12.5438+0℃.

Shenzhen: the extreme maximum temperature is 38.7℃, and the extreme minimum temperature is 0.2℃

Tianjin: extreme maximum temperature is 39.9℃, extreme minimum temperature is-18.3℃

Extended data

The influencing factors of temperature are as follows:

1. Natural factors

The temperature in a certain place changes periodically not only because of the change of solar radiation, but also because of the movement of the atmosphere rather than periodically. The change of actual temperature is the result of the interaction between these two aspects.

2. Human influence

Motor vehicles, industrial production and a large number of people's activities in cities produce a lot of nitrogen oxides, carbon dioxide, dust and so on, which can absorb a lot of energy from the thermal radiation in the environment, produce a well-known greenhouse effect, and cause further warming of the atmosphere.

The temperature measuring instruments are as follows:

1. Glass tube thermometer

Commonly used glass thermometers include the highest thermometer, the lowest thermometer and the dry and wet bulb thermometer.

2. Metal thermometer

The sensing element is a bimetal, which is welded by two metals with different expansion coefficients. One end of the metal is fixed, and the other end is displaced with the change of temperature. The displacement is almost linear with the air temperature. A self-recording system consists of a self-recording clock and a self-recording pen. The self-recording pen is connected with the amplification lever and controlled by the sensing element.

3. Metal resistance thermometer

It is made by using the principle that the resistance of metal wire is proportional to the temperature change. There are three kinds of commonly used metal wires: platinum wire, copper wire and iron wire, with resistance values ranging from tens of ohms to 100 ohms, among which platinum wire has the best stability and can be used as a standard thermometer. Resistance thermometers are suitable for telemetry.

Baidu encyclopedia-temperature

China Meteorological Data Network-China standardized historical temperature data set in recent 50 years