How is the weather?这个不用加like

How is the weather?这个不用加like
.How is the weather?=What is the weather like?天气怎么样?
第一个不用加 like,是为什么?跟how
2.What will the weather be like tomorrow?
是不是 一般将来时的 疑问句,这里提问只把助动词 will 提前就可以吗?be 不需要 提前?