今天的天气是下雨的，用英语可以说是 "It's raining today."
来源： "Rain" 是英语中表示 "下雨" 的词汇，而 "it's" 是 "it is" 的缩写，用来描述天气状况。
一些英文例句及其中文翻译如下：
"I don't want to go out, it's raining." (我不想出门，在下雨。)
"The forecast said it would rain today." (预报说今天会下雨。)
"I can't bepeve how much it's raining." (我不敢相信下了多少雨。)