I think sometimes we make better landings in bad weather because we are concentrating more.
I think sometimes we make better landings in bad weather because we can feel all of the aircraft more, its moving around more, or trying to. We can therefore feel the air more, there is a visual sense of motion with cloud for speed appreciation etc(unless its IMC at night) Also you can feel the air, against the aircraft (kind of, apt really).
Here is another thing - usually on gin clear days, in the summer.
You are on a three mile final and when your profile is perfect - the picture seems to freeze - as if suspended animation -its like the picture never changes, for a bit.
If the profile is perfect, then the speed and rate of descent are perfect and if there is no change - (trending up or down). Has anyone here ever noticed this?