The sky cleared after the storm.

暴风雨过后，天转晴了。

《牛津词典》

Little by little, the sky cleared.

渐渐地，天空放晴了。

youdao

The rain stopped and the sky cleared up.

雨过天晴。

《新英汉大辞典》

Soon after the sky cleared one of his aides claimed to have heard the engine of a spotter plane and there was general alarm, but when I looked there was nothing.

NPR: Ronan Bennett: From Prisoner to Writer

It was colder than ever now, but the sky had cleared, and a bright moon had emerged from the clouds, cold and white in a pool of indigo sky right above the garden.

NEWYORKER: The Cold Outside

Cloudy to begin with, the sky had cleared.

NEWYORKER: The Woman of the House