What is the lowest temperature in Suzhou since meteorological records began?

Suzhou is controlled by the cold and high pressure from the mainland in winter, which is cold and rainless. Winter accounts for 93% of the days with the lowest daily temperature below 0℃ throughout the year. The average temperature in winter is 4.3℃, and the average minimum temperature is 1.1℃. Mid-to-late January is the coldest period of the year, with an average daily temperature of 3.0°C; an average minimum temperature of -0.1°C; severe cold weather with a daily minimum temperature <-8°C mostly occurs in January, which occurs once in 270 years on average.

The extreme minimum temperature was -9.8℃, which occurred on January 16, 1958.