When did Baoji start to get cold?

It was cool and windy in Baoji from June 9, 2022 to June 9, 2022. According to relevant public information, there will be about 5 northerly winds and 6-7 gusts in the northern and central parts of Japan. During the process, the average daily temperature in the central plain dropped by about 4℃, and in the northern and southern mountainous areas by about 6℃. The lowest temperature will appear at 1 1 in the early morning, 4-6℃ in the central plain, 1-3℃ in the northern and southern mountainous areas, and the first frost will appear in the mountainous areas.