The weather in Yantai

I am from Yantai, and I deeply feel that the climate is more abnormal than in previous years. This problem is difficult to estimate. It's very hot recently, short sleeves are ok, nothing special. At the end of September last year, the cold wind was rustling, and long sleeves were basically worn in June 5438+ 10. I didn't wear a down jacket in Yantai since I was a child ... ordinary sweater+single coat, but it snowed unexpectedly last winter and the weather was very cold ... so I had to put on a down jacket.