What month is the cold storage period in Nanjing?

From the middle of 1 1 to the end of March or early April.

Winter in Nanjing is generally cold for about four months. After all, Nanjing, as a southern region, cannot be short in spring and autumn. The winter weather process in Nanjing is mainly affected by cold wave or cold air, which occurs once every 7- 10 days on average. When the cold air goes south, there will be obvious cooling, strong wind, rain and snow in Nanjing, and then the weather will turn fine, frost will appear, and it will gradually warm up, forming an obvious alternating phenomenon of cold and warm.