what is the weather 和how is the weather 的区别

what is the weather ......? 通常为what is the weather like?其中what 是疑问代词，后面必须有介词like，意思是天气怎样。

how is the weather ......? 通常格式为how is the weather?how为译文副词，不必接介词已经完整了。意思和前者一样。