询问今天天气：

How is the weather today？

What's the weather like today？

询问明天天气：

How is the weather tomorrow？

What will the weather be like tomorrow？

询问昨天天气：

What was the weather like yesterday？

询问特定地点的天气：

How is the weather in Beijing in summer？

What's the weather like in London in winter？

询问是否会下雨：

Is it going to rain today？

Will it be sunny today？