YOU SAID:

There is so much rain outside, absolutely pouring. Might as well be raining cats and dogs.

INTO JAPANESE

外で絶対に注ぐ雨が多くあります。可能性がありますもが土砂降りの雨。

BACK INTO ENGLISH

The rain absolutely pouring out more there. May rain cats and dogs.

INTO JAPANESE

確実によりある土砂降りの雨。雨が土砂降り。

BACK INTO ENGLISH

Ensures a pouring rain. It's pouring rain.

INTO JAPANESE

土砂降りの雨を確認します。土砂降りの雨です。