YOU SAID:

im feeling sad, but it's winter's fault

INTO JAPANESE

悲しい気持ちですが、冬のせいです

BACK INTO ENGLISH

I'm sad, but it's because of winter

INTO JAPANESE

悲しいけど冬のせい

BACK INTO ENGLISH

Sad but because of winter

INTO JAPANESE

悲しいけど冬のせい