The weather is cold one minute and hot the next.

天气忽冷忽热。

I need it because the weather is cold.

我需要它，因为天气冷。

The weather is cold and the sky is always cloudy.

天气寒冷，天空总是多云。

The weather is cold and snowy.

天气冷并且有雪。

The weather is cold and wet here.

这儿的天气又冷又潮湿。

It is December now and the weather is cold.

现在是十二月了，天气很冷。

The weather is cold, so I won't jog today.

天气很冷，我今天就不去跑步了。

Take warm clothes in case the weather is cold.

多带些暖和的衣服，以防天气变冷。

Take warm clothes in case the weather iS cold.

带上厚衣服，以防天气变冷。

The Winter is coming, it's true! the weather is cold, also man.

冬天真真切切的来了，天冷了，人冷了。