what kind of weather dominates the novel?

Yes, I remember that it was always raining.

Rain serves in the novel as a potent symbol of the inevitable disintegration of happiness in life. Catherine infuses the weather with meaning as she and Henry lie in bed listening to the storm outside. As the rain falls on the roof, Catherine admits that the rain scares her and says that it has a tendency to ruin things for lovers. Of course, no meteorological phenomenon has such power; symbolically, however, Catherine’s fear proves to be prophetic, for doom does eventually come to the lovers. After Catherine’s death, Henry leaves the hospital and walks home in the rain. Here, the falling rain validates Catherine’s anxiety and confirms one of the novel’s main contentions: great love, like anything else in the world—good or bad, innocent or deserving—cannot last.