He was not in a good mood that day.

他那天心情不好。

《牛津词典》

Jupiter was not in a good mood.

丘比特情绪不好。

youdao

If I'm not in a good mood, I will go reading and I can feel calm.

如果我心情不好，我会去阅读书籍，这样我能感到平静。

youdao

but the friend does not look like he is in a good mood. In fact, he had many drinks and he's crying.

但你的朋友看起来情绪不佳。事实上，他喝了很多，并且在掉眼泪。

It seems 课堂 - SpeakingMax英语口语达人

So it's hard not to be in a, you know, good mood here,

所以在这里真的很难……你知道……很难心情不好。

加州的天气 - SpeakingMax英语口语达人

Obamneycare architect Jonathan Gruber is not in a very good mood.

FORBES: Gruber: Romney Is "Lying"; Romneycare and Obamacare Are "The Same F***ing Bill"

It's hard not to picture Canaris in a good mood, walking into an early fog that the sun would chase away by breakfast time.

NPR: Excerpt: 'Gone Tomorrow'

Their most serious limitation, however, is that elections are lost and won in marginal seats, and the national mood is not a good guide to what happens there.

ECONOMIST: Polls and elections