Scudellari plays on the word "becoming," which can mean growing into something and also being fitting or attractive. The speaker says it has become "unbecoming" to keep "becoming less," so the poem opens with a sense of diminishment that feels both sad and slightly embarrassing.
The second stanza starts to echo the saying "Into each life some rain must fall," then corrects itself. The speaker turns it toward what comes after the rain: "a little life." That life turns out to be flies and spiders, small creatures that crawl in once the weather has passed. The speaker's question, "Must the flies come?", sounds weary and a little irritated. The flies fall "back into stories no one needed to tell," which suggests tired, repeated tales.
The mood is wry and gloomy, with a dry humor. Nothing dramatic happens, but things keep getting worse in small, irritating ways. The poem ends on the single word "unbecoming," as though the decline simply continues.