明天的天气怎么样用英语怎么说呢？我们可以说"What will the weather be like tomorrow?"。这个短语是英语中常用的询问天气预报的表达方式。例如：

"I'm wondering what the weather will be like tomorrow. Do you know?"

"The forecast said there might be rain tomorrow. What do you think the weather will be like?"

另外，我们也可以使用简略一些的表达方式，比如"What's the weather tomorrow?"。例如：

"Hey, what's the weather tomorrow? I need to know if I should bring an umbrella to work."

"Do you have any plans for tomorrow? Oh, and what's the weather going to be like?"

希望这些例句对你有所帮助。