Clouds were gathering in the sky, so it would rainClouds were gathering in the sky, so it would rain
Заход за линию горизонта (о солнце, небесных светилах). Огненно-красное освещение неба над горизонтом при заходе солнца.
Clouds were gathering in the sky, so it would rainClouds were gathering in the sky, so it would rain