Dave Bonta's short poem catches a single moment of change at dawn. The first image is striking: night "like a bruise." A bruise is dark, tender, and slow to fade, so the comparison suggests the night felt heavy or even painful. Then comes the quiet relief of "goes away again." That word "again" makes the departure feel familiar, as if the speaker has watched this happen many times and still notices it.
The second half turns to the weather. The ground has been held in frost, and now a "great rain" is coming. The word "great" gives the rain a sense of size and welcome, though the poem never says outright how the speaker feels. Judging by the imagery, the mood is one of release: stiffness giving way to movement, hardness to softness. The poem is calm and observant, with a small sense of wonder at how quickly the morning can shift from one state to another.