Tavi Gevinson's Book Review

I agree with Tavi when she says the memories were "recalled in almost creepy detail". There are a lot of random details thrown into the stories being told by the narrators. For example, when the narrator is telling the story of when Cecilia came home from the hospital he recalls that "it was Tuesday and [Joe's mother] smelled of furniture polish"(14). Another time this happens is when the narrator is talking about the picture the real estate agent took of the Lisbon house and recalls that "it was June 13, eighty-three degrees out, under sunny skies" (3). These details seem to just be thrown into the stories or explanations as random thoughts the narrator is remembering, but what makes these details so important? I don't know what would make me remember the temperature it was when a certain even happened. It just doesn't seem to be very important to the story. Are these details just added to make the book creepier?