We have 立春=risshun, the first of spring and whole 二十四節気 today. It means to get warmer on lunar calendar, while still in cold weather on solar one normally. Yes, it is quite normal for us to put on thick sweaters and coats within February. However, thinner ones are often chosen this winter. Less snow, much more rain. The latter prevents Mei-Shun from going to see lovely horseies.