What's the weather like in Tai 'an around May Day?

The weather is really uncertain, but in the past, it was usually enough to wear a long-sleeved shirt on May Day, but it also cooled down. I remember it was very warm on May Day last year, and I could only wear short-sleeved trousers at noon, but I still need to prepare a coat, because it is still a little cold in the morning and evening ... May the sun shine on your wedding day! , happy marriage! ....