1. According to historical meteorological records, 195 1 year, the weather in Beijing was MINUS 20℃ for four consecutive days, and it reached MINUS 22.8℃ on 65,438+1October 13.
2, so the coldest time in Beijing can reach MINUS 22.8℃, but this situation is not common.
Extended data
The influencing factors of temperature are as follows:
1, natural factors include periodic changes caused by solar radiation changes and non-periodic changes caused by atmospheric movement. The change of actual temperature is the result of the joint action of 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.
Reference source
Baidu Encyclopedia-Beijing (the capital and municipality directly under the Central Government of People's Republic of China (PRC))
Baidu Encyclopedia-Temperature (Physical Quantity)