Rainy day want to cry.

Whenever it rains, I want to cry.

Rainy days bring back heartache, as if crying.

In the solitude of a rainy day, melancholy dances.

Raindrops fall, like silent tears, washing away the world's noise, yet amplifying the echoes of our hearts.

Rainy days make me feel sad.

The cold rain outside the window cuts the world and splashes on the glass, just like my heart is broken and torn.

It's raining. （This sentence is simple and can imply sadness or loneliness.）

希望这些句子能帮助你表达下雨天想哭的情感。