From what month did Changchun get cold?

According to the weather network, the temperature in Changchun generally starts to get cold in September, and it may snow in 10. The winter in Changchun is very long, and it starts to be below zero in 1 1 month. January is the coldest time, and the lowest temperature can reach below MINUS 30 degrees. The summer in Changchun is very short, only from June to the middle and late September. Therefore, if you want to travel to Changchun, you'd better choose summer or autumn, so that you can enjoy the beautiful scenery of Changchun without being bothered by the cold.