1·Sometimes it's rainy in summer.
夏天有时会下雨。
2·It'll still be rainy tomorrow.
明天还是下雨。
3·Oh, my god! A rainy day again.
哦，天！又下雨了。
4·It's either cloudy or rainy.
要么阴天要么下雨。
5·It will be rainy tomorrow.
明天会下雨。
6·Summer is a rainy season in China.
在中国，夏天是一个多雨的季节。
7·Tomorrow will be rainy.
明天将下雨。
8·It's rainy in spring.
春天是多雨的。
9·Because it was rainy.
因为下雨了。
10·The rainy season in the Andes normally starts in December.
安第斯山脉的雨季一般从12月开始。
—— 《柯林斯英汉双解大词典》