Cloudy day, cloudy day, go out to play.

阴天，阴天，出去玩耍。

youdao

Try to plant late in the day or on a cloudy day.

VOA: special.2009.05.19

Saturday was expected to be largely cloudy with occasional snow flurries throughout the day, which will add to the lying snow in places.

BBC: Snow in Coventry

The battery is an affordable, safe and reliable way to store energy for a cloudy day.

FORBES: Green Living In America's "Steel City"

As elsewhere on the coasts of the southern Mediterranean, winter weather can be changeable from day to day with cool, cloudy, rainy spells interrupting the generally warm, sunny, and settled weather.

BBC: Libya