I will visit shanghai,jiaxing,hangzhou,haining,yiwu,wuxi,suzhou from 22/10 to 30/10.

Since these cities you wanna to go are not far from each other, the temperature difference among them is slight. 50 – 73F in SH, 48 – 75F in Jiaxing, 48 – 77F in Hangzhou, and 48 – 75F in Suzhou.
So if it were sunny days, it will be warm there. You can just wear T-shirt and a thin coat. In the afternoon time a T-shirt is enough. For rainy days, long sleeve blouse or long sleeve T-shirt and a thin coat will be fine.
Have fun there!