Most folks like sunny, cloudless days, but artists often prefer fog, rain, and clouds. This sketch in Maine wouldn’t have been half as interesting on a day with a clear blue sky.
The water was glassy, just one semi-tone darker than the sky. Everything was gray except those red details at the waterline. All the color of the far boats dropped out. The distant sailboat is just a ghost.
As with overcast light, there is little modeling of the form, because white light is coming from overhead in all directions.
Related posts on overcast light, part 1 and part 2