It Was cloudy.

我来回答一下吧。

How was the weather yesterday

这个句子的中文意思是“昨天的天气怎么样？”，回答一般都是用：It was sunny/cloudyainy/snowy/foggy.

它的同义句应该是:What was the weather like yesterday

答语也是和上面一样的。

希望我的回答能够尽快帮到你啊！