Which temperature is lower at 2 am or 8 am in Lanzhou, Gansu?

The temperature at two o'clock in the morning in Lanzhou, Gansu is lower than that at eight o'clock in the morning. According to the data of Lanzhou meteorological department, the temperature at two o'clock in the morning is generally around 5℃, while the temperature at eight o'clock in the morning is generally around 10℃. It can be seen that the temperature at 2 am is about 5℃ lower than that at 8 am, so the temperature at 2 am is lower than that at 8 am. The meteorological department of Lanzhou also said that the temperature in the early morning was much lower than that at 8: 00 in the morning because the temperature dropped rapidly at night, and the difference was quite large.