这种天气即使在一月份也算得上非常寒冷。

The weather, even for January, was exceptionally cold.

《牛津词典》

为了体验一种不那么使人兴奋但压力较小的购物体验，网上零售商也开始在一月份进行他们自己的促销活动。

For a less exciting but less stressful shopping experience, online retailers are also getting in on the act with January sales of their own.

youdao

吉姆的生日在一月份。

Jim's birthday is in January.

youdao

Whereas here, you know, it's January. It's February 1st. It's beautiful out. Yay!

而在这里呢，你知道，现在一月份。2月1号了。天气好得很。真好！

加州的天气 - SpeakingMax英语口语达人

But usually in January you can't do it because it's too cold.

但通常在一月份不能做，因为太冷了。

喜欢曲棍球 - SpeakingMax英语口语达人