It's cold outside, so you should put on a thick sweater.

外面很冷，所以你应该穿上一件厚毛衣。

youdao

It's cold outside, Jimmy!

外面很冷，吉米！

youdao

Put more clothes, it's cold outside.

多穿点衣服，外面冷。

youdao

When it is cold outside, the president and his family can warm up near one of the White House's twenty-eight fireplaces.

VOA: special.2009.05.08

I didn't want to wait outside, because it's too cold for me.

我不想在外面等着，因为那里有点冷。

How long实战 - SpeakingMax英语口语达人

They want to get their lives back on track, and it's cold outside.

BBC: Sandy flood aid passes US Congress

Deschanel, who's dabbled in jazz cabaret and sung on the occasional film soundtrack, has starred in such movies as Elf (you might remember her in-the-shower rendition of "Baby, It's Cold Outside") and The Hitchhiker's Guide to the Galaxy.

NPR: Zooey Deschanel, Tuning Up with She and Him

And when it's cold outside, few things sound as appealing as a hearty onion soup with a layer of baked Gruyere so thick it almost requires a fork and knife, especially when it's part of a prix fixe lunch.

WSJ: Onion Soup and Old New York