Simile-A Comparison of one thing to another using the word Like or As...The thunder strikes like the crack of a bat that just hit a home run...
Metaphor-A Comparison of one thing to another without using Like or As...Her room is a cave...
Alliteration-Words with the same beginning sound one after the other in a line of writing...Ice Tea to the Top of a Tall glass...
Onomatopoeia-The formation of a word from a sound...sizzle, cuckoo, zap, etc...
Personification-The attributions of human characteristics to something nonhuman...The windows were so small it was like they were holding their breath...
Hyperbole-exaggerated statements or claims not meant to be taken literally..."I have told you to clean your room a million times!"
Here is another poem about Rain by Mary Oliver...
The robin cries: rain! in Mary Oliver's poem?
The crow calls: thunder!
The blacksnake climbing
in the vines halts
his long ladder of muscle
while thunderheads whirl up
out of the white west,
their dark hooves nicking
the tall trees as they come.
Rain, rain, rain! sings the robin
frantically, then flies for cover.
The crow hunches.
The blacksnake
pours himself swift and heavy
into the ground.