"今天天气怎么样" 在英语中可以表达为 "What's the weather like today?"。这个短语来自英语中经常用来询问当前天气情况的问句，"What's the weather like?"。例如：

A: "What's the weather like today?"

B: "It's sunny and warm."

A: "What's the weather like today?"

B: "It's cold and rainy."

在这个例子中，"What's the weather like today?" 是问句，而 "It's sunny and warm." 和 "It's cold and rainy." 是回答。

一些更多例句：

"I'm not sure, let me check the weather forecast."

"It's supposed to be sunny and hot all week."

"I heard there's a storm coming. We should probably bring an umbrella."

在这些例句中，"weather forecast" 是预测天气的意思，"sunny and hot" 是晴朗温暖的天气，"storm" 是暴风雨，"umbrella" 是雨伞。