Which is the lower temperature at 2 a.m. or 8 a.m. in Lanzhou, Gansu?

The temperature at 2 a.m. in Lanzhou, Gansu is lower than the temperature at 8 a.m. According to data from the 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 two o'clock in the morning is about 5℃ lower than that at eight o'clock in the morning, so the temperature at two o'clock in the morning is lower than the temperature at eight o'clock in the morning. The Lanzhou Meteorological Department also stated that due to the rapid temperature drop at night, the temperature in the early morning was much lower than the temperature at 8 a.m., and the difference was large.