YOU SAID:
In the winter the grass is green due to all of the rain
INTO JAPANESE
冬には雨が降るので草は緑です
BACK INTO ENGLISH
The grass is green because it rains in winter
INTO JAPANESE
冬に雨が降るので草は緑です
BACK INTO ENGLISH
The grass is green because it rains in winter
You've done this before, haven't you.