What is an example of hyperbole in "All Summer in a Day"?

Hyperbole is used for descriptions of the rain stopping and the jungle growing.

Hyperbole is extreme exaggeration. Authors use it to describe situations that are intense, as a way to help the reader fully gauge the extremity of them. Bradbury uses hyperbole and other literary devices throughout this story to help the reader fully appreciate the situation on Venus, where it never stops raining.

This story is about a group of children who do not...

Hyperbole is used for descriptions of the rain stopping and the jungle growing.

Hyperbole is extreme exaggeration. Authors use it to describe situations that are intense, as a way to help the reader fully gauge the extremity of them. Bradbury uses hyperbole and other literary devices throughout this story to help the reader fully appreciate the situation on Venus, where it never stops raining.

This story is about a group of children who do not remember seeing the sun. They live on Venus, where it rains almost constantly. The sun came out once when they were two years old, but they do not remember it. Now the sun is supposed to come out again, and the children are very excited.

One child, Margot, has been to Earth more recently than the others. She remembers the sun, and suffers more from the constant rain on Venus than most. To help us appreciate the situation, Bradbury uses hyperbole to describe the way everyone feels when the constant rain stops.

The silence was so immense and unbelievable that you felt your ears had been stuffed or you had lost your hearing altogether.

In other words, the lack of rain is deafening, because the people of Venus are so used to hearing rain that the lack of rain comes as a shock to their ears.

The description of the jungle is also an example of hyperbole. 

They stopped running and stood in the great jungle that covered Venus, that grew and never stopped growing, tumultuously, even as you watched it.

You can’t literally see the jungle growing, but it rains so much and the jungle grows so fast that it seems this way. This adds to the helplessness that the children, especially Margot, are feeling. It seems as if the rain will never end and it will just swallow them up.