It was a warm day, if not exactly hot.

这一天即使算不上热，也是一个暖和的日子。

《牛津词典》

It's a fine, warm day.

天气晴和。

《新英汉大辞典》

"Warm day," Walt greeted him.

沃尔特向他打招呼道：“天气暖和吧！”

youdao

After a long day at work, Eddie returns home to his wife and the warm love of the niece he and his wife have raised.

VOA: special.2010.03.12

I just basically do year-one to the present, it's was nice warm outside, that was the day he was born.

我到现在做了一年，那天户外很晴朗暖和，那天他出生了。

麻省理工公开课 - 媒体、教育、市场课程节选

Imagine standing in the middle of the Utah desert on a warm summer day.

设想某个温暖的夏日,你身处犹他州的沙漠深处。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Thanks for being here on this very, very warm day in the summer in Washington.

WHITEHOUSE: Press Briefing

On this warm day, the rattle of Tehran's chaotic traffic comes in through the open window of a small room crowded with sewing machines.

NPR: Iran's President Sets Out to Ease Unemployment

He wore the usual uniform: head scarf like a flag, leather jacket on a warm day, bullet necklaces, skull rings, gun buckle belt, motorcycle boots.

NPR: Katrina Affecting Psyches Beyond the Gulf Region