Of the four you showed, the last one is the one that evokes the sense of rain most to me. I asked myself why that was, and I see two elements that work together in this photo. First, the apparent fog (making the distant ship and tugboat appear lighter than they clearly were in reality), and then the puddles of water on the near dock, which make it clear that the grayness is from rain and not simply fog.
It might have been even more "rainlike" if there had been splashes from raindrops hitting the puddles. But as it is, that one captures the mood of a rainy day for me, while the others don't. The black portion of the near ship also contrasts well with the simliar part (much lighter) of the distant ship. This contrast makes the grayness of the distant ship look like an atmospheric (rain or fog) effect rather than simply overexposure.
It is a tough kind of effect to capture effectively. Maybe that's why you don't see very many rainy andscapes.