I made it to the Frankfurt Christmas market on Sunday night. The biggest one in the city is at the Römerberg, the public square in the old town, and seat of the Frankfurt city administration since the 15th century.
It was cold! .. but by evening the snow had stopped. Later, when I was already back in the hotel, a heavy downpour of rain later washed away just about all of the snow on the ground. I hope the stalls for the Römerberg vendors stayed dry inside!