The clear sky continued in to the evening. When we came back from our curry, there was already frost on the grass alongside the boat. The batteries kept us warm in to the evening, but by the morning, inside the boat was pretty chilly. We took the edge off the temperature during breakfast, but then set off in the rain to the Stoke Bruerne Canal Museum hoping it would be warmer than inside the boat. It was, but not by much. We all wandered around with our coats still on.