I am planning to visit shanghai between 26th dec and 31st dec.

Yes, in the travel low season, the hotel will be a bit cheaper. As for the snow, it usually snows at the end of December, but I’m not sure about the exact date. You can pay close attention to the weather forecast and see if there will be a snow during your stay.

Or you can go to Harbin, where you can definitely view the ice and snow scene. Have a good trip.