In the oppressive heat of a late summer, the protagonist Inman finds himself enduring stifling humidity, which makes breathing feel burdensome, akin to inhaling through a dishrag. The sweltering conditions not only affect his comfort but also have tangible effects on his surroundings, such as causing fresh bed linens to sour and even promoting the growth of small black mushrooms from the pages of a book. This highlights the relentless nature of the summer's grip and its impact on his life.
As Inman continues to gaze out the window, he feels that the grey pane, after being so thoroughly examined, has revealed everything it could offer him. This idea suggests a moment of stagnation, where both the external environment and his internal state reflect a sense of weariness and the passage of time, leaving him feeling as though he has extracted all meaning from that view. The window symbolizes both confinement and a longing for something beyond the oppressive conditions he faces.