The activity of cold air will become more and more frequent. When will Shanghai officially enter winter? According to the standard of meteorological significance ↓↓↓

As long as the average daily temperature is lower than 10℃ for five consecutive days, winter can be declared.

According to the meteorological records of previous years

■ The average winter time in Shanghai is 65438+February 3rd. Last year, Shanghai announced its entry into winter on February 7th.

■ From 198 1 to 20 17, the earliest winter time in Shanghai is 198 1, and the latest is19/.

However, since June this year 165438+ 10, the temperature in Shanghai has been obviously high, with the monthly average temperature of 15.0℃, which is 2. 1℃ higher than normal, and the temperature at many stations has reached a record in the same period in history, so ↓↓↓↓

This year's winter sprint has not yet begun.

But Xiao bu reminds ~

Recently, cold air activities are frequent, and it is still cold in the morning and evening. Pay attention to keep warm when traveling ~