rain雨可数吗

例句：

Meteorologists have predicted mild rains for the next few days.

气象学家们已经预测接下来的几天有小雨。

The rains come in September.

雨季九月份开始。

The roads were slick with rain.

下雨路滑。

The rain began before sunrise.

雨是在日出前开始下的。