(a.) Anxiety of sky - The poet represents the pattering of the rain on the roof. He says that during rain the dark cloud float in the air and cover the starry sky. The sky with stars which has been shining is covered and appears dark. It shows the anxiety or unhappiness of sky.
(b.) Result of unhappiness - Kinney says that the drop of rain is tear which emits out gently due to sadness. But pattering of rain pleasure to the poet who has been lying in room and pressing the pillow.
(c.) Sweet dreams and memories - The poet has lost in sweet dreams and old memories listening to musical patterning the rain. It creates echoes in his hear.
(d.) Mother's sweet memory - During the rain the poet reminds his mother in his dreams. Even when it stops to rain he feels the benevolent look of his mother
To sum up the poem, the poet wants to convey the message that the nature too, exhibits its grief and pleasure