Paris is faboo in November and December. Berthillon ice cream doesn't melt while eating it and hot chocolate is definitely on the must do list at Christian Constant. I'm from Seattle, the latitude and weather is quite similiar, it rains, it can be cold and cloudy. However, Parisians are there and you see the city as it functions. Bring a jacket, hat and good boots and you're set.
In late November and December, Christmas lights are up and shop windows are decorated. All the museums, restaurants and stores are open for business as usual. Lines for exhibitions won't be as long except on weekends. Some hotels have promos for reduced room rates during this time.

We usually go to do a bit of shopping and of course, finish of the mileage year .