YOU SAID:

It's freezing outside, even tho I have my jacket on, and I can't stay here anymore, because the weather is too bad.

INTO JAPANESE

外は凍っていて、ジャケットを着ていても、天気が悪いのでもうここにはいられません。

BACK INTO ENGLISH

The outside is frozen, and even if you wear a jacket, you can't stay here anymore because of the bad weather.

INTO JAPANESE

外は凍っていて、ジャケットを着ていても、悪天候のためここにはもういられません。

BACK INTO ENGLISH

The outside is frozen and even if you are wearing a jacket, you can't stay here anymore due to bad weather.