Idioms describing cloudy weather

Cloud lock: describes the gloomy weather and gloomy atmosphere.

Darkness: gloom: darkness. Describe a dark sky or dim light. It also describes unconsciousness, dizziness or loss of control. It is also a metaphor for the darkness and chaos of society.

Cloudy: describes the close distribution of clouds.

Yunmi: Cloud: Red means red, sometimes referring to Xia Hong; Sometimes it refers to the evenly distributed clouds before it snows. Thick clouds covered the sky, indicating that heavy snow was coming.

Dusk: dusk: evening; ... it was dark. It is dark at night.