Answer:
The kids realize that the rain is less enjoyable than the sun.
Explanation:
It seems that the kids haven't seen the Sun in a very long time, years even. They are living underground on Venus and they have been for years. So in this moment, they finally see the Sun and all run outside to play and have fun and soak in the warmth after such a long time.
-Hops
I am going to have to put down #!