I might be going to Shanghai from 25/26 Nov to 2 Dec. What should I wear there? Thanks!

Based on the previous statistics, the temperature may range from 45 F to 50 F during that period.
It would be a little bit cold. There will may have several light rainy days. You can wear trench coat. In addition, overcoats, sweaters, pants, long johns and sport shoes are also necessary. :)